diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/SyntheticExtensionsScope.kt b/compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/SyntheticExtensionsScope.kt
index c3a1f4e0d34..ab7b91d3933 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/SyntheticExtensionsScope.kt
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/SyntheticExtensionsScope.kt
@@ -74,7 +74,9 @@ class SyntheticExtensionsScope(storageManager: StorageManager) : JetScope by Jet
     }
 
     private fun isGoodSetMethod(descriptor: FunctionDescriptor, propertyType: JetType): Boolean {
-        return descriptor.getValueParameters().singleOrNull()?.getType() == propertyType
+        val parameter = descriptor.getValueParameters().singleOrNull() ?: return false
+        return parameter.getType() == propertyType
+               && parameter.getVarargElementType() == null
                && descriptor.getTypeParameters().isEmpty()
                && descriptor.getReturnType()?.let { KotlinBuiltIns.isUnit(it) } ?: false
                && descriptor.getVisibility() == Visibilities.PUBLIC
diff --git a/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.kt b/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.kt
index d82f34ef121..1c46a2c1073 100644
--- a/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.kt
+++ b/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.kt
@@ -5,6 +5,7 @@ fun foo(javaClass: JavaClass) {
     <!VAL_REASSIGNMENT!>javaClass.something3<!>++
     <!VAL_REASSIGNMENT!>javaClass.something4<!>++
     <!VAL_REASSIGNMENT!>javaClass.something5<!>++
+    <!VAL_REASSIGNMENT!>javaClass.something6<!> = null
 }
 
 // FILE: JavaClass.java
@@ -23,4 +24,7 @@ public class JavaClass {
 
     public int getSomething5() { return 1; }
     public static void setSomething5(int value) { }
+
+    public int[] getSomething6() { return null; }
+    public void setSomething6(int... value) { }
 }
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.txt b/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.txt
index 8b6a8a97784..9493dc52099 100644
--- a/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.txt
+++ b/compiler/testData/diagnostics/tests/syntheticExtensions/FalseSetters.txt
@@ -10,11 +10,13 @@ public open class JavaClass {
     public open fun getSomething3(): kotlin.Int
     public open fun getSomething4(): kotlin.Int
     public open fun getSomething5(): kotlin.Int
+    public open fun getSomething6(): kotlin.IntArray!
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public open fun setSomething1(/*0*/ value: kotlin.Int, /*1*/ c: kotlin.Char): kotlin.Unit
     public open fun setSomething2(/*0*/ value: kotlin.String!): kotlin.Unit
     public open fun setSomething3(/*0*/ value: kotlin.Int): kotlin.Int
     public open fun </*0*/ T> setSomething4(/*0*/ value: kotlin.Int): kotlin.Unit
+    public open fun setSomething6(/*0*/ vararg value: kotlin.Int /*kotlin.IntArray!*/): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 
     // Static members