diff --git a/compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/VirtualFileKotlinClassFinder.kt b/compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/VirtualFileKotlinClassFinder.kt
index 4cc61b1dded..469209f9219 100644
--- a/compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/VirtualFileKotlinClassFinder.kt
+++ b/compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/VirtualFileKotlinClassFinder.kt
@@ -28,7 +28,7 @@ abstract class VirtualFileKotlinClassFinder : JvmVirtualFileFinder {
     }
 
     override fun findKotlinClass(javaClass: JavaClass): KotlinJvmBinaryClass? {
-        var file = (javaClass as JavaClassImpl).psi.containingFile!!.virtualFile ?: return null
+        var file = (javaClass as JavaClassImpl).psi.containingFile?.virtualFile ?: return null
         if (javaClass.outerClass != null) {
             // For nested classes we get a file of the containing class, to get the actual class file for A.B.C,
             // we take the file for A, take its parent directory, then in this directory we look for A$B$C.class