diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c
index 774226c51c9d..e9cee2ea16ce 100644
--- a/lib/libc/locale/setrunelocale.c
+++ b/lib/libc/locale/setrunelocale.c
@@ -62,7 +62,7 @@ setrunelocale(encoding)
 	_RuneLocale *rl;
 
 	if (!encoding || strlen(encoding) > ENCODING_LEN)
-	    return(EFAULT);
+		return (EINVAL);
 
 	/*
 	 * The "C" and "POSIX" locale are always here.