--- a/suite/app/macbuild/Contents/Info.plist.in
+++ b/suite/app/macbuild/Contents/Info.plist.in
@@ -25,16 +25,23 @@
 	<key>CFBundleGetInfoString</key>
 	<string>@MOZ_APP_DISPLAYNAME@ @MOZ_APP_VERSION@</string>
 	<key>NSAppleScriptEnabled</key>
 	<true/>
 	<key>CGDisableCoalescedUpdates</key>
 	<true/>
         <key>LSMinimumSystemVersion</key>
         <string>10.5.0</string>
+	<key>LSMinimumSystemVersionByArchitecture</key>
+	<dict>
+		<key>i386</key>
+		<string>10.5.0</string>
+		<key>x86_64</key>
+		<string>10.6.0</string>
+        </dict>
         <key>CFBundleDocumentTypes</key>
 	<array>
 	
 	<!--Updated Metadata begins here-->
 			
 			<dict>
 				<key>CFBundleTypeName</key>
 				<string>Text Document</string>