diff --git a/kernel/params.c b/kernel/params.c
index 42fe5e6..e28c706 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -272,7 +272,7 @@
 		       unsigned int min, unsigned int max,
 		       void *elem, int elemsize,
 		       int (*set)(const char *, struct kernel_param *kp),
-		       int *num)
+		       unsigned int *num)
 {
 	int ret;
 	struct kernel_param kp;