diff --git a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt
index 51106210d70..0cdea2ce86c 100644
--- a/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt
+++ b/compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/TypeOperatorLowering.kt
@@ -772,8 +772,8 @@ private class TypeOperatorLowering(private val backendContext: JvmBackendContext
         return startOffset to endOffset
     }
 
-    private fun sourceViewFor(declaration: IrDeclaration): CharSequence =
-        declaration.fileParent.getKtFile()!!.viewProvider.contents
+    private fun sourceViewFor(declaration: IrDeclaration): CharSequence? =
+        declaration.fileParent.getKtFile()?.viewProvider?.contents
 
     private val throwTypeCastException: IrSimpleFunctionSymbol =
         backendContext.ir.symbols.throwTypeCastException