diff --git a/mail/app/macbuild/Contents/Info.plist.in b/mail/app/macbuild/Contents/Info.plist.in
index 3657fe48d81..a58eaa9868f 100644
--- a/mail/app/macbuild/Contents/Info.plist.in
+++ b/mail/app/macbuild/Contents/Info.plist.in
@@ -53,5 +53,7 @@
 	</array>
 	<key>NSAppleScriptEnabled</key>
 	<true/>
+	<key>CGDisableCoalescedUpdates</key>
+	<true/>
 </dict>
 </plist>