--- a/security/sandbox/mac/Sandbox.mm
+++ b/security/sandbox/mac/Sandbox.mm
@@ -267,16 +267,20 @@ static const char contentSandboxRules[] 
   "      (global-name \"com.apple.cookied\")\n"
   "      (global-name \"com.apple.cache_delete\")\n"
   "      (global-name \"com.apple.pluginkit.pkd\")\n"
   "      (global-name \"com.apple.bird\")\n"
   "      (global-name \"com.apple.ocspd\")\n"
   "      (global-name \"com.apple.cmio.AppleCameraAssistant\")\n"
   "      (global-name \"com.apple.DesktopServicesHelper\"))\n"
   "\n"
+  "; bug 1312273\n"
+  "  (if (= macosMinorVersion 9)\n"
+  "     (allow mach-lookup (global-name \"com.apple.xpcd\")))\n"
+  "\n"
   "  (allow iokit-open\n"
   "      (iokit-user-client-class \"IOHIDParamUserClient\")\n"
   "      (iokit-user-client-class \"IOAudioControlUserClient\")\n"
   "      (iokit-user-client-class \"IOAudioEngineUserClient\")\n"
   "      (iokit-user-client-class \"IGAccelDevice\")\n"
   "      (iokit-user-client-class \"nvDevice\")\n"
   "      (iokit-user-client-class \"nvSharedUserClient\")\n"
   "      (iokit-user-client-class \"nvFermiGLContext\")\n"