diff --git a/chrome/browser/ui/cocoa/base_bubble_controller.mm b/chrome/browser/ui/cocoa/base_bubble_controller.mm
index 42b62b0d77101..2b20e209bdeb0 100644
--- a/chrome/browser/ui/cocoa/base_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/base_bubble_controller.mm
@@ -40,6 +40,7 @@
     parentWindow_ = parentWindow;
     anchor_ = anchoredAt;
     shouldOpenAsKeyWindow_ = YES;
+    shouldCloseOnResignKey_ = YES;
 
     // Watch to see if the parent window closes, and if so, close this one.
     NSNotificationCenter* center = [NSNotificationCenter defaultCenter];