diff --git a/mm/nommu.c b/mm/nommu.c
index b624acec6d2e..38c22ea0a95c 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -719,7 +719,7 @@ static int validate_mmap_request(struct file *file,
 
 	if (file) {
 		/* files must support mmap */
-		if (!file->f_op->mmap)
+		if (!file_has_valid_mmap_hooks(file))
 			return -ENODEV;
 
 		/* work out if what we've got could possibly be shared