diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c b/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
index bc769a2bd..358b657fa 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
@@ -454,7 +454,7 @@ static struct gk20a_page_alloc *__do_gk20a_alloc_pages(
 
 	while (pages) {
 		u64 chunk_addr = 0;
-		u64 chunk_pages = 1 << __fls(pages);
+		u64 chunk_pages = (u64)1 << __fls(pages);
 		u64 chunk_len = chunk_pages << a->page_shift;
 
 		/*