diff --git a/mm/gup.c b/mm/gup.c
index 527ec2c6cca3b758eeb9a5e353b4075146fe8634..d9e6fddcc51f06a1286c56a24c510c1a3efa8add 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1575,7 +1575,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	end = start + len;
 
 	if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
-					start, len)))
+					(void __user *)start, len)))
 		return 0;
 
 	/*