diff --git a/brightray/browser/mac/bry_inspectable_web_contents_view.mm b/brightray/browser/mac/bry_inspectable_web_contents_view.mm
index 4db0d8ac05..94fba05f18 100644
--- a/brightray/browser/mac/bry_inspectable_web_contents_view.mm
+++ b/brightray/browser/mac/bry_inspectable_web_contents_view.mm
@@ -145,6 +145,7 @@ using namespace brightray;
 #pragma mark - NSWindowDelegate
 
 - (void)windowWillClose:(NSNotification*)notification {
+  [devtools_window_ setDelegate:nil];
   inspectableWebContentsView_->inspectable_web_contents()->CloseDevTools();
 }