diff --git a/sys/libkern/strcspn.c b/sys/libkern/strcspn.c
index fce6d4b8b071..62bfcf78eeb7 100644
--- a/sys/libkern/strcspn.c
+++ b/sys/libkern/strcspn.c
@@ -37,7 +37,7 @@ __FBSDID("$FreeBSD$");
 #define	BIT(c)	((u_long)1 << ((u_char)(c) % LONG_BIT))
 
 size_t 
-strcspn(const char * __restrict s, const char * __restrict charset) 
+strcspn(const char *s, const char *charset)
 {
 	/*
 	 * NB: idx and bit are temporaries whose use causes gcc 3.4.2 to
diff --git a/sys/sys/libkern.h b/sys/sys/libkern.h
index c5bd5a07a0b9..37838c99ba0c 100644
--- a/sys/sys/libkern.h
+++ b/sys/sys/libkern.h
@@ -174,8 +174,8 @@ char	*strchr(const char *, int);
 char	*strchrnul(const char *, int);
 int	 strcmp(const char *, const char *);
 char	*strcpy(char * __restrict, const char * __restrict);
-size_t	 strcspn(const char * __restrict, const char * __restrict) __pure;
 char	*strdup_flags(const char *__restrict, struct malloc_type *, int);
+size_t	 strcspn(const char *, const char *) __pure;
 char	*strdup(const char *__restrict, struct malloc_type *);
 char	*strncat(char *, const char *, size_t);
 char	*strndup(const char *__restrict, size_t, struct malloc_type *);