diff --git a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/FakeFileForLightClass.kt b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/FakeFileForLightClass.kt
index 02a02e80039..f4c3e0d5390 100644
--- a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/FakeFileForLightClass.kt
+++ b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/elements/FakeFileForLightClass.kt
@@ -79,4 +79,6 @@ open class FakeFileForLightClass(
             super.setPackageName(packageName)
         }
     }
+
+    override fun isPhysical() = false
 }
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