diff --git a/mozilla/lib/mac/MacMemoryAllocator/MemAllocatorDebug.Prefix b/mozilla/lib/mac/MacMemoryAllocator/MemAllocatorDebug.Prefix
index 2c4a6d7e656..b0b17e75c1c 100644
--- a/mozilla/lib/mac/MacMemoryAllocator/MemAllocatorDebug.Prefix
+++ b/mozilla/lib/mac/MacMemoryAllocator/MemAllocatorDebug.Prefix
@@ -27,5 +27,3 @@
 #define DEBUG 1
 
 #include "MemAllocatorConfig.h"
-
-#pragma profile on