diff --git a/build-common/src/org/jetbrains/kotlin/incremental/ProtoCompareGenerated.kt b/build-common/src/org/jetbrains/kotlin/incremental/ProtoCompareGenerated.kt
index e9c220f8765..e215c00a57b 100644
--- a/build-common/src/org/jetbrains/kotlin/incremental/ProtoCompareGenerated.kt
+++ b/build-common/src/org/jetbrains/kotlin/incremental/ProtoCompareGenerated.kt
@@ -520,9 +520,9 @@ open class ProtoCompareGenerated(val oldNameResolver: NameResolver, val newNameR
             if (!checkEquals(old.getExtension(JvmProtoBuf.propertySignature), new.getExtension(JvmProtoBuf.propertySignature))) return false
         }
 
-        if (old.hasExtension(JvmProtoBuf.isMovedFromInterfaceCompanion) != new.hasExtension(JvmProtoBuf.isMovedFromInterfaceCompanion)) return false
-        if (old.hasExtension(JvmProtoBuf.isMovedFromInterfaceCompanion)) {
-            if (old.getExtension(JvmProtoBuf.isMovedFromInterfaceCompanion) != new.getExtension(JvmProtoBuf.isMovedFromInterfaceCompanion)) return false
+        if (old.hasExtension(JvmProtoBuf.flags) != new.hasExtension(JvmProtoBuf.flags)) return false
+        if (old.hasExtension(JvmProtoBuf.flags)) {
+            if (old.getExtension(JvmProtoBuf.flags) != new.getExtension(JvmProtoBuf.flags)) return false
         }
 
         if (old.getExtensionCount(JsProtoBuf.propertyAnnotation) != new.getExtensionCount(JsProtoBuf.propertyAnnotation)) {
@@ -1734,8 +1734,8 @@ fun ProtoBuf.Property.hashCode(stringIndexes: (Int) -> Int, fqNameIndexes: (Int)
         hashCode = 31 * hashCode + getExtension(JvmProtoBuf.propertySignature).hashCode(stringIndexes, fqNameIndexes)
     }
 
-    if (hasExtension(JvmProtoBuf.isMovedFromInterfaceCompanion)) {
-        hashCode = 31 * hashCode + getExtension(JvmProtoBuf.isMovedFromInterfaceCompanion)
+    if (hasExtension(JvmProtoBuf.flags)) {
+        hashCode = 31 * hashCode + getExtension(JvmProtoBuf.flags)
     }
 
     for(i in 0..getExtensionCount(JsProtoBuf.propertyAnnotation) - 1) {
diff --git a/build-common/test/org/jetbrains/kotlin/metadata/jvm/DebugJvmProtoBuf.java b/build-common/test/org/jetbrains/kotlin/metadata/jvm/DebugJvmProtoBuf.java
index 94ec6b916e6..52d3cc9950d 100644
--- a/build-common/test/org/jetbrains/kotlin/metadata/jvm/DebugJvmProtoBuf.java
+++ b/build-common/test/org/jetbrains/kotlin/metadata/jvm/DebugJvmProtoBuf.java
@@ -11,7 +11,7 @@ public final class DebugJvmProtoBuf {
     registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.methodSignature);
     registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.lambdaClassOriginName);
     registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.propertySignature);
-    registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.isMovedFromInterfaceCompanion);
+    registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.flags);
     registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.typeAnnotation);
     registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.isRaw);
     registry.add(org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.typeParameterAnnotation);
@@ -4559,14 +4559,19 @@ public final class DebugJvmProtoBuf {
           .newFileScopedGeneratedExtension(
         org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.JvmPropertySignature.class,
         org.jetbrains.kotlin.metadata.jvm.DebugJvmProtoBuf.JvmPropertySignature.getDefaultInstance());
-  public static final int IS_MOVED_FROM_INTERFACE_COMPANION_FIELD_NUMBER = 101;
+  public static final int FLAGS_FIELD_NUMBER = 101;
   /**
    * <code>extend .org.jetbrains.kotlin.metadata.Property { ... }</code>
+   *
+   * <pre>
+   **
+   *isMovedFromInterfaceCompanion   true if this property is declared in an interface companion, and the field is stored in the interface
+   * </pre>
    */
   public static final
     org.jetbrains.kotlin.protobuf.GeneratedMessage.GeneratedExtension<
       org.jetbrains.kotlin.metadata.DebugProtoBuf.Property,
-      java.lang.Integer> isMovedFromInterfaceCompanion = org.jetbrains.kotlin.protobuf.GeneratedMessage
+      java.lang.Integer> flags = org.jetbrains.kotlin.protobuf.GeneratedMessage
           .newFileScopedGeneratedExtension(
         java.lang.Integer.class,
         null);
@@ -4738,27 +4743,27 @@ public final class DebugJvmProtoBuf {
       "perty_signature\022\'.org.jetbrains.kotlin.m" +
       "etadata.Property\030d \001(\01327.org.jetbrains.k" +
       "otlin.metadata.jvm.JvmPropertySignature:" +
-      "R\n!is_moved_from_interface_companion\022\'.o" +
-      "rg.jetbrains.kotlin.metadata.Property\030e " +
-      "\001(\005:g\n\017type_annotation\022#.org.jetbrains.k",
-      "otlin.metadata.Type\030d \003(\0132).org.jetbrain" +
-      "s.kotlin.metadata.Annotation:3\n\006is_raw\022#" +
-      ".org.jetbrains.kotlin.metadata.Type\030e \001(" +
-      "\010:z\n\031type_parameter_annotation\022,.org.jet" +
-      "brains.kotlin.metadata.TypeParameter\030d \003" +
-      "(\0132).org.jetbrains.kotlin.metadata.Annot" +
-      "ation:E\n\021class_module_name\022$.org.jetbrai" +
-      "ns.kotlin.metadata.Class\030e \001(\005B\004\230\265\030\001:k\n\024" +
-      "class_local_variable\022$.org.jetbrains.kot" +
-      "lin.metadata.Class\030f \003(\0132\'.org.jetbrains",
-      ".kotlin.metadata.Property:P\n\034anonymous_o" +
-      "bject_origin_name\022$.org.jetbrains.kotlin" +
-      ".metadata.Class\030g \001(\005B\004\230\265\030\001:I\n\023package_m" +
-      "odule_name\022&.org.jetbrains.kotlin.metada" +
-      "ta.Package\030e \001(\005B\004\230\265\030\001:o\n\026package_local_" +
-      "variable\022&.org.jetbrains.kotlin.metadata" +
-      ".Package\030f \003(\0132\'.org.jetbrains.kotlin.me" +
-      "tadata.PropertyB\022B\020DebugJvmProtoBuf"
+      "9\n\005flags\022\'.org.jetbrains.kotlin.metadata" +
+      ".Property\030e \001(\005:\0010:g\n\017type_annotation\022#." +
+      "org.jetbrains.kotlin.metadata.Type\030d \003(\013",
+      "2).org.jetbrains.kotlin.metadata.Annotat" +
+      "ion:3\n\006is_raw\022#.org.jetbrains.kotlin.met" +
+      "adata.Type\030e \001(\010:z\n\031type_parameter_annot" +
+      "ation\022,.org.jetbrains.kotlin.metadata.Ty" +
+      "peParameter\030d \003(\0132).org.jetbrains.kotlin" +
+      ".metadata.Annotation:E\n\021class_module_nam" +
+      "e\022$.org.jetbrains.kotlin.metadata.Class\030" +
+      "e \001(\005B\004\230\265\030\001:k\n\024class_local_variable\022$.or" +
+      "g.jetbrains.kotlin.metadata.Class\030f \003(\0132" +
+      "\'.org.jetbrains.kotlin.metadata.Property",
+      ":P\n\034anonymous_object_origin_name\022$.org.j" +
+      "etbrains.kotlin.metadata.Class\030g \001(\005B\004\230\265" +
+      "\030\001:I\n\023package_module_name\022&.org.jetbrain" +
+      "s.kotlin.metadata.Package\030e \001(\005B\004\230\265\030\001:o\n" +
+      "\026package_local_variable\022&.org.jetbrains." +
+      "kotlin.metadata.Package\030f \003(\0132\'.org.jetb" +
+      "rains.kotlin.metadata.PropertyB\022B\020DebugJ" +
+      "vmProtoBuf"
     };
     org.jetbrains.kotlin.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
         new org.jetbrains.kotlin.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
@@ -4808,7 +4813,7 @@ public final class DebugJvmProtoBuf {
     methodSignature.internalInit(descriptor.getExtensions().get(1));
     lambdaClassOriginName.internalInit(descriptor.getExtensions().get(2));
     propertySignature.internalInit(descriptor.getExtensions().get(3));
-    isMovedFromInterfaceCompanion.internalInit(descriptor.getExtensions().get(4));
+    flags.internalInit(descriptor.getExtensions().get(4));
     typeAnnotation.internalInit(descriptor.getExtensions().get(5));
     isRaw.internalInit(descriptor.getExtensions().get(6));
     typeParameterAnnotation.internalInit(descriptor.getExtensions().get(7));
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/serialization/JvmSerializerExtension.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/serialization/JvmSerializerExtension.kt
index 9de8c104f40..4a77ec209ba 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/serialization/JvmSerializerExtension.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/serialization/JvmSerializerExtension.kt
@@ -18,6 +18,7 @@ import org.jetbrains.kotlin.load.kotlin.NON_EXISTENT_CLASS_NAME
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf
 import org.jetbrains.kotlin.metadata.jvm.deserialization.ClassMapperLite
+import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmFlags
 import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmProtoBufUtil
 import org.jetbrains.kotlin.metadata.serialization.MutableVersionRequirementTable
 import org.jetbrains.kotlin.name.FqName
@@ -180,9 +181,9 @@ class JvmSerializerExtension(private val bindings: JvmSerializationBindings, sta
         )
 
         proto.setExtension(JvmProtoBuf.propertySignature, signature)
-        val fieldMovedFromInterfaceCompanion = bindings.get(FIELD_MOVED_FROM_INTERFACE_COMPANION, descriptor)
-        if (fieldMovedFromInterfaceCompanion != null && fieldMovedFromInterfaceCompanion) {
-            proto.setExtension(JvmProtoBuf.isMovedFromInterfaceCompanion, 1)
+        val flags = JvmFlags.getPropertyFlags(bindings.get(FIELD_MOVED_FROM_INTERFACE_COMPANION, descriptor) == true)
+        if (flags != 0) {
+            proto.setExtension(JvmProtoBuf.flags, flags)
         }
 
         if (JvmAbi.isInterfaceCompanionWithBackingFieldsInOuter(descriptor.containingDeclaration)) {
diff --git a/core/metadata.jvm/src/jvm_metadata.proto b/core/metadata.jvm/src/jvm_metadata.proto
index 4d52ade9ab9..cafe595d34f 100644
--- a/core/metadata.jvm/src/jvm_metadata.proto
+++ b/core/metadata.jvm/src/jvm_metadata.proto
@@ -102,7 +102,11 @@ extend Function {
 
 extend Property {
   optional JvmPropertySignature property_signature = 100;
-  optional int32 is_moved_from_interface_companion = 101;
+
+  /**
+    isMovedFromInterfaceCompanion   true if this property is declared in an interface companion, and the field is stored in the interface
+   */
+  optional int32 flags = 101 [default = 0];
 }
 
 extend Type {
diff --git a/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/JvmProtoBuf.java b/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/JvmProtoBuf.java
index 33feb8b2b34..9ac8bd13f8f 100644
--- a/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/JvmProtoBuf.java
+++ b/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/JvmProtoBuf.java
@@ -11,7 +11,7 @@ public final class JvmProtoBuf {
     registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.methodSignature);
     registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.lambdaClassOriginName);
     registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.propertySignature);
-    registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.isMovedFromInterfaceCompanion);
+    registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.flags);
     registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.typeAnnotation);
     registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.isRaw);
     registry.add(org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.typeParameterAnnotation);
@@ -3859,14 +3859,19 @@ public final class JvmProtoBuf {
         100,
         org.jetbrains.kotlin.protobuf.WireFormat.FieldType.MESSAGE,
         org.jetbrains.kotlin.metadata.jvm.JvmProtoBuf.JvmPropertySignature.class);
-  public static final int IS_MOVED_FROM_INTERFACE_COMPANION_FIELD_NUMBER = 101;
+  public static final int FLAGS_FIELD_NUMBER = 101;
   /**
    * <code>extend .org.jetbrains.kotlin.metadata.Property { ... }</code>
+   *
+   * <pre>
+   **
+   *isMovedFromInterfaceCompanion   true if this property is declared in an interface companion, and the field is stored in the interface
+   * </pre>
    */
   public static final
     org.jetbrains.kotlin.protobuf.GeneratedMessageLite.GeneratedExtension<
       org.jetbrains.kotlin.metadata.ProtoBuf.Property,
-      java.lang.Integer> isMovedFromInterfaceCompanion = org.jetbrains.kotlin.protobuf.GeneratedMessageLite
+      java.lang.Integer> flags = org.jetbrains.kotlin.protobuf.GeneratedMessageLite
           .newSingularGeneratedExtension(
         org.jetbrains.kotlin.metadata.ProtoBuf.Property.getDefaultInstance(),
         0,
diff --git a/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmFlags.kt b/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmFlags.kt
new file mode 100644
index 00000000000..2dc66b0490f
--- /dev/null
+++ b/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmFlags.kt
@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.metadata.jvm.deserialization
+
+import org.jetbrains.kotlin.metadata.deserialization.Flags
+
+/**
+ * @see Flags
+ */
+object JvmFlags {
+    // Properties
+
+    val IS_MOVED_FROM_INTERFACE_COMPANION = Flags.FlagField.booleanFirst()
+
+    fun getPropertyFlags(isMovedFromInterfaceCompanion: Boolean): Int =
+        IS_MOVED_FROM_INTERFACE_COMPANION.toFlags(isMovedFromInterfaceCompanion)
+}
diff --git a/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmProtoBufUtil.kt b/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmProtoBufUtil.kt
index 73290a23f1b..a98095d0cc0 100644
--- a/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmProtoBufUtil.kt
+++ b/core/metadata.jvm/src/org/jetbrains/kotlin/metadata/jvm/deserialization/JvmProtoBufUtil.kt
@@ -121,6 +121,6 @@ object JvmProtoBufUtil {
     }
 
     @JvmStatic
-    fun isMovedFromInterfaceCompanion(proto: ProtoBuf.Property) =
-        proto.getExtension(JvmProtoBuf.isMovedFromInterfaceCompanion).toInt().and(1) != 0
+    fun isMovedFromInterfaceCompanion(proto: ProtoBuf.Property): Boolean =
+        JvmFlags.IS_MOVED_FROM_INTERFACE_COMPANION.get(proto.getExtension(JvmProtoBuf.flags))
 }