diff --git a/Source/WebKit2/ChangeLog b/Source/WebKit2/ChangeLog
index 464787d..ea8f0bc 100644
--- a/Source/WebKit2/ChangeLog
+++ b/Source/WebKit2/ChangeLog
@@ -1,3 +1,12 @@
+2013-05-15  Alexey Proskuryakov  <ap@apple.com>
+
+        <rdar://problem/13902706> Lion: com.apple.tsm.uiserver sandbox error in Console when
+        launching Safari
+
+        Reviewed by Anders Carlsson.
+
+        * WebProcess/com.apple.WebProcess.sb.in: Silence the violation.
+
 2013-05-13  Anders Carlsson  <andersca@apple.com>
 
         Frame::editor() should return a reference
diff --git a/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in b/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in
index 8260505..910849a 100644
--- a/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in
+++ b/Source/WebKit2/WebProcess/com.apple.WebProcess.sb.in
@@ -305,3 +305,7 @@
        (global-name "com.apple.coreservices.appleevents")
        (global-name "com.apple.pasteboard.1")
        (global-name "com.apple.speech.recognitionserver"))
+
+#if __MAC_OS_X_VERSION_MIN_REQUIRED == 1070
+(deny mach-lookup (with no-log) (global-name "com.apple.tsm.uiserver")) ;; <rdar://problem/13902706>
+#endif