diff --git a/checkin_notes b/checkin_notes
index 9d0b6f3853..0aa622c74d 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -6020,3 +6020,10 @@ David  20 Sept 2012
     - A bunch of tweaks from Steffen Moller, e.g. using MAXPATHLEN
 
     various files
+
+Charlie 21 Sep 2012
+    - Mac: Fix build breaks introduced by above changes; path_to_error 
+        arg is modified by CheckNestedDirectories() so can't be const.
+
+    client/
+        check_security.cpp
diff --git a/client/check_security.cpp b/client/check_security.cpp
index 5790e204ed..b52062f496 100644
--- a/client/check_security.cpp
+++ b/client/check_security.cpp
@@ -42,7 +42,7 @@ bool IsUserInGroupBM();
 static int CheckNestedDirectories(
     char * basepath, int depth, 
     int use_sandbox, int isManager, 
-    cont char * path_to_error
+    char * path_to_error
 );
 
 #if (! defined(__WXMAC__) && ! defined(_MAC_INSTALLER))
@@ -501,7 +501,7 @@ saverName[2] = "Progress Thru Processors";
 }
 
 
-static int CheckNestedDirectories(char * basepath, int depth, 
+static int CheckNestedDirectories(char * basepath, int depth,
                                     int use_sandbox, int isManager, 
                                     char * path_to_error
                                 ) {