diff --git a/compiler/testData/codegen/box/classes/kt9642.kt b/compiler/testData/codegen/box/classes/kt9642.kt
new file mode 100644
index 00000000000..414954aab60
--- /dev/null
+++ b/compiler/testData/codegen/box/classes/kt9642.kt
@@ -0,0 +1,17 @@
+class Outer {
+    class Nested {
+        fun fn(): String  {
+            s = "OK"
+            return s
+        }
+    }
+
+    companion object {
+        public var s = "fail"
+            private set
+    }
+}
+
+fun box(): String {
+    return Outer.Nested().fn()
+}
\ No newline at end of file
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxCodegenTestGenerated.java
index 20c9c03e4d3..3e55220381f 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxCodegenTestGenerated.java
@@ -1576,6 +1576,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             doTest(fileName);
         }
 
+        @TestMetadata("kt9642.kt")
+        public void testKt9642() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/box/classes/kt9642.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("namedClassObject.kt")
         public void testNamedClassObject() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/box/classes/namedClassObject.kt");