diff --git a/tools/ccc/ccclib/Tools.py b/tools/ccc/ccclib/Tools.py
index 667ff7a..5cb1808 100644
--- a/tools/ccc/ccclib/Tools.py
+++ b/tools/ccc/ccclib/Tools.py
@@ -630,7 +630,7 @@
         if not arglist.getLastArg(arglist.parser.dynamiclibOption):
             if arglist.getLastArg(arglist.parser.force_cpusubtype_ALLOption):
                 self.addDarwinArch(cmd_args, arch, arglist)
-                cmd_args.append('-force_cpusubtype_all')
+                cmd_args.append('-force_cpusubtype_ALL')
             else:
                 self.addDarwinSubArch(cmd_args, arch, arglist)