diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 242bce1..533981d 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4121,8 +4121,8 @@
 		if (unlikely(req->tp_frame_size & (TPACKET_ALIGNMENT - 1)))
 			goto out;
 
-		rb->frames_per_block = req->tp_block_size/req->tp_frame_size;
-		if (unlikely(rb->frames_per_block <= 0))
+		rb->frames_per_block = req->tp_block_size / req->tp_frame_size;
+		if (unlikely(rb->frames_per_block == 0))
 			goto out;
 		if (unlikely((rb->frames_per_block * req->tp_block_nr) !=
 					req->tp_frame_nr))