diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index b1511255b4df..ac040d607f4f 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -883,7 +883,7 @@ static loff_t iomap_zero_iter(struct iomap_iter *iter, bool *did_zero)
 
 	do {
 		unsigned offset = offset_in_page(pos);
-		size_t bytes = min_t(u64, PAGE_SIZE - offset, length);
+		ssize_t bytes = min_t(u64, PAGE_SIZE - offset, length);
 		struct page *page;
 		int status;