diff --git a/lib/fnmatch.c b/lib/fnmatch.c
index 223b9d3cd..1a5e8d0d3 100644
--- a/lib/fnmatch.c
+++ b/lib/fnmatch.c
@@ -48,10 +48,7 @@ extern int errno;
 
 /* Match STRING against the filename pattern PATTERN, returning zero if
    it matches, nonzero if not.  */
-int fnmatch(pattern, string, flags)
-const char *pattern;
-const char *string;
-int flags;
+int fnmatch(const char *pattern, const char *string, int flags)
 {
 	register const char *p = pattern, *n = string;
 	register char c;