diff --git a/build-common/test/org/jetbrains/kotlin/serialization/DebugProtoBuf.java b/build-common/test/org/jetbrains/kotlin/serialization/DebugProtoBuf.java
index 5390fc8e15b..4d84337dfb8 100644
--- a/build-common/test/org/jetbrains/kotlin/serialization/DebugProtoBuf.java
+++ b/build-common/test/org/jetbrains/kotlin/serialization/DebugProtoBuf.java
@@ -22172,7 +22172,7 @@ public final class DebugProtoBuf {
           ExtendableMessageOrBuilder<TypeAlias> {
 
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -22181,7 +22181,7 @@ public final class DebugProtoBuf {
      */
     boolean hasFlags();
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -22455,7 +22455,7 @@ public final class DebugProtoBuf {
     public static final int FLAGS_FIELD_NUMBER = 1;
     private int flags_;
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -22466,7 +22466,7 @@ public final class DebugProtoBuf {
       return ((bitField0_ & 0x00000001) == 0x00000001);
     }
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -22635,7 +22635,7 @@ public final class DebugProtoBuf {
     }
 
     private void initFields() {
-      flags_ = 0;
+      flags_ = 6;
       name_ = 0;
       typeParameter_ = java.util.Collections.emptyList();
       underlyingType_ = org.jetbrains.kotlin.serialization.DebugProtoBuf.Type.getDefaultInstance();
@@ -22881,7 +22881,7 @@ public final class DebugProtoBuf {
 
       public Builder clear() {
         super.clear();
-        flags_ = 0;
+        flags_ = 6;
         bitField0_ = (bitField0_ & ~0x00000001);
         name_ = 0;
         bitField0_ = (bitField0_ & ~0x00000002);
@@ -23137,9 +23137,9 @@ public final class DebugProtoBuf {
       }
       private int bitField0_;
 
-      private int flags_ ;
+      private int flags_ = 6;
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -23150,7 +23150,7 @@ public final class DebugProtoBuf {
         return ((bitField0_ & 0x00000001) == 0x00000001);
       }
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -23161,7 +23161,7 @@ public final class DebugProtoBuf {
         return flags_;
       }
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -23175,7 +23175,7 @@ public final class DebugProtoBuf {
         return this;
       }
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -23184,7 +23184,7 @@ public final class DebugProtoBuf {
        */
       public Builder clearFlags() {
         bitField0_ = (bitField0_ & ~0x00000001);
-        flags_ = 0;
+        flags_ = 6;
         onChanged();
         return this;
       }
@@ -24642,7 +24642,7 @@ public final class DebugProtoBuf {
       "ararg_element_type\030\004 \001(\0132(.org.jetbrains" +
       ".kotlin.serialization.Type\022\036\n\026vararg_ele",
       "ment_type_id\030\006 \001(\005*\005\010d\020\310\001\"\201\003\n\tTypeAlias\022" +
-      "\020\n\005flags\030\001 \001(\005:\0010\022\022\n\004name\030\002 \002(\005B\004\210\265\030\001\022I\n" +
+      "\020\n\005flags\030\001 \001(\005:\0016\022\022\n\004name\030\002 \002(\005B\004\210\265\030\001\022I\n" +
       "\016type_parameter\030\003 \003(\01321.org.jetbrains.ko" +
       "tlin.serialization.TypeParameter\022A\n\017unde" +
       "rlying_type\030\004 \001(\0132(.org.jetbrains.kotlin" +
diff --git a/core/deserialization/src/descriptors.proto b/core/deserialization/src/descriptors.proto
index 3ed5fa3536c..d4b0fda1cea 100644
--- a/core/deserialization/src/descriptors.proto
+++ b/core/deserialization/src/descriptors.proto
@@ -336,7 +336,7 @@ message TypeAlias {
     hasAnnotations
     Visibility
   */
-  optional int32 flags = 1 [default = 0];
+  optional int32 flags = 1 [default = 6 /* public, no annotations */];
 
   required int32 name = 2 [(name_id_in_table) = true];
 
diff --git a/core/deserialization/src/org/jetbrains/kotlin/serialization/ProtoBuf.java b/core/deserialization/src/org/jetbrains/kotlin/serialization/ProtoBuf.java
index 7255e23f183..14dd31e4ea1 100644
--- a/core/deserialization/src/org/jetbrains/kotlin/serialization/ProtoBuf.java
+++ b/core/deserialization/src/org/jetbrains/kotlin/serialization/ProtoBuf.java
@@ -17012,7 +17012,7 @@ public final class ProtoBuf {
             ExtendableMessageOrBuilder<TypeAlias> {
 
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -17021,7 +17021,7 @@ public final class ProtoBuf {
      */
     boolean hasFlags();
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -17259,7 +17259,7 @@ public final class ProtoBuf {
     public static final int FLAGS_FIELD_NUMBER = 1;
     private int flags_;
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -17270,7 +17270,7 @@ public final class ProtoBuf {
       return ((bitField0_ & 0x00000001) == 0x00000001);
     }
     /**
-     * <code>optional int32 flags = 1 [default = 0];</code>
+     * <code>optional int32 flags = 1 [default = 6];</code>
      *
      * <pre>
      *hasAnnotations
@@ -17427,7 +17427,7 @@ public final class ProtoBuf {
     }
 
     private void initFields() {
-      flags_ = 0;
+      flags_ = 6;
       name_ = 0;
       typeParameter_ = java.util.Collections.emptyList();
       underlyingType_ = org.jetbrains.kotlin.serialization.ProtoBuf.Type.getDefaultInstance();
@@ -17644,7 +17644,7 @@ public final class ProtoBuf {
 
       public Builder clear() {
         super.clear();
-        flags_ = 0;
+        flags_ = 6;
         bitField0_ = (bitField0_ & ~0x00000001);
         name_ = 0;
         bitField0_ = (bitField0_ & ~0x00000002);
@@ -17822,9 +17822,9 @@ public final class ProtoBuf {
       }
       private int bitField0_;
 
-      private int flags_ ;
+      private int flags_ = 6;
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -17835,7 +17835,7 @@ public final class ProtoBuf {
         return ((bitField0_ & 0x00000001) == 0x00000001);
       }
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -17846,7 +17846,7 @@ public final class ProtoBuf {
         return flags_;
       }
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -17860,7 +17860,7 @@ public final class ProtoBuf {
         return this;
       }
       /**
-       * <code>optional int32 flags = 1 [default = 0];</code>
+       * <code>optional int32 flags = 1 [default = 6];</code>
        *
        * <pre>
        *hasAnnotations
@@ -17869,7 +17869,7 @@ public final class ProtoBuf {
        */
       public Builder clearFlags() {
         bitField0_ = (bitField0_ & ~0x00000001);
-        flags_ = 0;
+        flags_ = 6;
         
         return this;
       }