diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/ModifiersChecker.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/ModifiersChecker.kt
index 56736f80ded..d86e13a99c2 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/ModifiersChecker.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/ModifiersChecker.kt
@@ -93,7 +93,7 @@ public object ModifierCheckerCore {
     private val possibleParentTargetMap = mapOf<JetModifierKeywordToken, Set<KotlinTarget>>(
             INNER_KEYWORD     to EnumSet.of(CLASS_ONLY, INNER_CLASS, LOCAL_CLASS, ENUM_CLASS, ENUM_ENTRY),
             OVERRIDE_KEYWORD  to EnumSet.of(CLASS, ENUM_ENTRY),
-            PROTECTED_KEYWORD to EnumSet.of(CLASS, ENUM_ENTRY),
+            PROTECTED_KEYWORD to EnumSet.of(CLASS_ONLY, INNER_CLASS, LOCAL_CLASS, ENUM_CLASS, INTERFACE, OBJECT),
             COMPANION_KEYWORD to EnumSet.of(CLASS_ONLY, ENUM_CLASS, INTERFACE)
     )
 
@@ -102,7 +102,8 @@ public object ModifierCheckerCore {
             INTERNAL_KEYWORD  to EnumSet.of(INTERFACE),
             PROTECTED_KEYWORD to EnumSet.of(INTERFACE),
             // Deprecated in M15
-            FINAL_KEYWORD     to EnumSet.of(INTERFACE)
+            FINAL_KEYWORD     to EnumSet.of(INTERFACE),
+            PROTECTED_KEYWORD to EnumSet.of(OBJECT)
     )
 
     // First modifier in pair should be also first in declaration
diff --git a/compiler/testData/codegen/box/properties/classObjectProperties.kt b/compiler/testData/codegen/box/properties/classObjectProperties.kt
index 7c21029e7a2..51661a5b3fc 100644
--- a/compiler/testData/codegen/box/properties/classObjectProperties.kt
+++ b/compiler/testData/codegen/box/properties/classObjectProperties.kt
@@ -5,7 +5,7 @@ class Test {
         public val prop1 : Int = 10
 
         public var  prop2 : Int = 11
-            protected set
+            private set
 
         public val prop3: Int = 12
             get() {
diff --git a/compiler/testData/diagnostics/tests/modifiers/protected.kt b/compiler/testData/diagnostics/tests/modifiers/protected.kt
new file mode 100644
index 00000000000..16b43390534
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/modifiers/protected.kt
@@ -0,0 +1,21 @@
+class My(protected val x: Int) {
+    class Her(protected val x: Int)
+
+    inner class Its(protected val x: Int)
+}
+
+object Your {
+    <!DEPRECATED_MODIFIER_CONTAINING_DECLARATION!>protected<!> fun foo() = 3
+}
+
+annotation class His(<!WRONG_MODIFIER_CONTAINING_DECLARATION!>protected<!> val x: Int)
+
+enum class Our(protected val x: Int) {
+    FIRST(42) {
+        <!WRONG_MODIFIER_CONTAINING_DECLARATION!>protected<!> fun foo() = 13
+    }
+}
+
+interface Their {
+    <!DEPRECATED_MODIFIER_CONTAINING_DECLARATION!>protected<!> fun foo() = 7
+}
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/tests/modifiers/protected.txt b/compiler/testData/diagnostics/tests/modifiers/protected.txt
new file mode 100644
index 00000000000..a02cbd46f4c
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/modifiers/protected.txt
@@ -0,0 +1,66 @@
+package
+
+@kotlin.annotation.annotation() public final class His : kotlin.Annotation {
+    public constructor His(/*0*/ x: kotlin.Int)
+    protected final val x: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class My {
+    public constructor My(/*0*/ x: kotlin.Int)
+    protected final val x: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public final class Her {
+        public constructor Her(/*0*/ x: kotlin.Int)
+        protected final val x: kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public final inner class Its {
+        public constructor Its(/*0*/ x: kotlin.Int)
+        protected final val x: kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+public final enum class Our : kotlin.Enum<Our> {
+    enum entry FIRST
+
+    private constructor Our(/*0*/ x: kotlin.Int)
+    protected final val x: kotlin.Int
+    protected final override /*1*/ /*fake_override*/ fun clone(): kotlin.Any
+    public final override /*1*/ /*fake_override*/ fun compareTo(/*0*/ other: Our): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public final override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public final override /*1*/ /*fake_override*/ fun name(): kotlin.String
+    public final override /*1*/ /*fake_override*/ fun ordinal(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    // Static members
+    public final /*synthesized*/ fun valueOf(/*0*/ value: kotlin.String): Our
+    public final /*synthesized*/ fun values(): kotlin.Array<Our>
+}
+
+public interface Their {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    protected open fun foo(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public object Your {
+    private constructor Your()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    protected final fun foo(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
diff --git a/compiler/testData/diagnostics/tests/scopes/VisibilityInClassObject.kt b/compiler/testData/diagnostics/tests/scopes/VisibilityInClassObject.kt
index 0fa69d95043..89a4d53a8f7 100644
--- a/compiler/testData/diagnostics/tests/scopes/VisibilityInClassObject.kt
+++ b/compiler/testData/diagnostics/tests/scopes/VisibilityInClassObject.kt
@@ -5,7 +5,7 @@ open class A {
         val internal_val = 1
         public val public_val: Int = 2
         private val private_val = 3
-        protected val protected_val: Int = 5
+        <!DEPRECATED_MODIFIER_CONTAINING_DECLARATION!>protected<!> val protected_val: Int = 5
     }
 
     fun fromClass() {
diff --git a/compiler/tests/org/jetbrains/kotlin/checkers/JetDiagnosticsTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/checkers/JetDiagnosticsTestGenerated.java
index 008e6469dc3..9d13845ed01 100644
--- a/compiler/tests/org/jetbrains/kotlin/checkers/JetDiagnosticsTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/checkers/JetDiagnosticsTestGenerated.java
@@ -9192,6 +9192,12 @@ public class JetDiagnosticsTestGenerated extends AbstractJetDiagnosticsTest {
                 doTest(fileName);
             }
 
+            @TestMetadata("protected.kt")
+            public void testProtected() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/modifiers/protected.kt");
+                doTest(fileName);
+            }
+
             @TestMetadata("redundantTargets.kt")
             public void testRedundantTargets() throws Exception {
                 String fileName = JetTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/modifiers/redundantTargets.kt");