diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index a03b11cf7887..e12657b4c3e0 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -2513,7 +2513,7 @@ static int ceph_zero_objects(struct inode *inode, loff_t offset, loff_t length)
 	s32 stripe_unit = ci->i_layout.stripe_unit;
 	s32 stripe_count = ci->i_layout.stripe_count;
 	s32 object_size = ci->i_layout.object_size;
-	u64 object_set_size = object_size * stripe_count;
+	u64 object_set_size = (u64) object_size * stripe_count;
 	u64 nearly, t;
 
 	/* round offset up to next period boundary */