--- Libc/Libc-498/include/libkern/Makefile.inc
+++ Libc/Libc-391.2.6/include/libkern/Makefile.inc
@@ -1,2 +1,3 @@
-LIBKERN_INSTHDRS += OSAtomic.h	OSCacheControl.h
+LIBKERN_INSTHDRS += OSAtomic.h
+
 LIBKERN_INSTHDRS := ${LIBKERN_INSTHDRS:S/^/${.CURDIR}\/include\/libkern\//}