--- tolower.c	2013-01-01 23:25:05.000000000 -0800
+++ tolower.c	2013-01-01 23:30:51.000000000 -0800
@@ -21,6 +21,10 @@
 #include <sys/types.h>
 #include <dirent.h>
 
+#ifndef WIN32
+#  include <limits.h>
+#endif
+
 // Option variables
 int upper, recurse, verbose, ignore, force, ignMixed;
 // char *expr;