diff --git a/IDE/src/BookmarkManager.bf b/IDE/src/BookmarkManager.bf
index 6cadde35..bbc195f6 100644
--- a/IDE/src/BookmarkManager.bf
+++ b/IDE/src/BookmarkManager.bf
@@ -229,7 +229,7 @@ namespace IDE
 
 			delete folder;
 
-			if (gApp.mDebugger.mBreakpointsChangedDelegate.HasListeners)
+			if (gApp.mDebugger?.mBreakpointsChangedDelegate.HasListeners == true)
 				gApp.mDebugger.mBreakpointsChangedDelegate();
 
 			BookmarksChanged();