diff --git a/external/buildscripts/build_all_osx.pl b/external/buildscripts/build_all_osx.pl
index 3bb992daa34a0a44f3cc5deb34d4ca0433da6225..865d1e0da45cbbd6057ead469bb5b0c984cebe32 100644
--- a/external/buildscripts/build_all_osx.pl
+++ b/external/buildscripts/build_all_osx.pl
@@ -181,10 +181,10 @@ sub MergeIntoFatBinary
 
 	if ($isExe)
 	{
-		system("codesign", "--entitlements", $buildscriptsdir . "/entitlements.plist", "-s", "-", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
+		system("codesign", "--entitlements", $buildscriptsdir . "/entitlements.plist", "-s", "-", "-f", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
 	}
 	else
 	{
-		system("codesign", "-s", "-", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
+		system("codesign", "-s", "-", "-f", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
 	}
 }
diff --git a/external/buildscripts/perl_lib/Tools.pm b/external/buildscripts/perl_lib/Tools.pm
index 8b2d7a6a7e2f4ab0440661e8935800c68b24d610..fccbdfbc0a8205b4ed451900d0292ab32310edcd 100644
--- a/external/buildscripts/perl_lib/Tools.pm
+++ b/external/buildscripts/perl_lib/Tools.pm
@@ -22,6 +22,9 @@ sub InstallNameTool
   system("install_name_tool -id $pathtoburnin $target") eq 0 or die("Failed running install_name_tool");
   print "running otool after:\n";
   system("otool","-L",$target);
+
+  print "running codesign on $target:\n";
+  system("codesign", "-s", "-", "-f", $target);
 }
 
 sub GitClone