diff --git a/platform/platform-tests/testSrc/com/intellij/openapi/keymap/impl/KeymapTest.java b/platform/platform-tests/testSrc/com/intellij/openapi/keymap/impl/KeymapTest.java
index ef41e59d337e..fc42b267731f 100644
--- a/platform/platform-tests/testSrc/com/intellij/openapi/keymap/impl/KeymapTest.java
+++ b/platform/platform-tests/testSrc/com/intellij/openapi/keymap/impl/KeymapTest.java
@@ -52,6 +52,7 @@ public class KeymapTest extends PlatformTestCase {
     myParent.addShortcut(ACTION_2, shortcut2);
 
     myChild = myParent.deriveKeymap("Child");
+    myChild.setCanModify(false);
     assertThat(myParent).isSameAs(myChild.getParent());
 
     myChild.addShortcut(ACTION_1, shortcutA);