diff --git a/platform/platform-impl/src/com/intellij/ui/mac/MacMainFrameDecorator.java b/platform/platform-impl/src/com/intellij/ui/mac/MacMainFrameDecorator.java
index aba50097c7da..5212c4626518 100644
--- a/platform/platform-impl/src/com/intellij/ui/mac/MacMainFrameDecorator.java
+++ b/platform/platform-impl/src/com/intellij/ui/mac/MacMainFrameDecorator.java
@@ -109,7 +109,9 @@ public final class MacMainFrameDecorator extends IdeFrameDecorator {
           JRootPane rootPane = myFrame.getRootPane();
           if (Registry.is("ide.mac.transparentTitleBarAppearance")) {
             UIUtil.setCustomTitleBar(myFrame, rootPane, runnable -> {
-              Disposer.register(parentDisposable, () -> runnable.run());
+              if(!Disposer.isDisposed(parentDisposable)) {
+                Disposer.register(parentDisposable, () -> runnable.run());
+              }
             });
           }
           exitFullScreen();