diff --git a/src/vnet/ethernet/packet.h b/src/vnet/ethernet/packet.h
index d70960b..13d7daf 100644
--- a/src/vnet/ethernet/packet.h
+++ b/src/vnet/ethernet/packet.h
@@ -142,8 +142,8 @@
 {
   u8 *bytes = (u8 *) (&h->priority_cfi_and_id);
 
-  bytes[0] &= 0x1f;
-  bytes[0] |= (prio & 0x7) << 5;
+  bytes[0] &= 0x0f;
+  bytes[0] |= (prio & 0xf) << 4;
 }
 
 always_inline u8
@@ -151,7 +151,7 @@
 {
   u8 *bytes = (u8 *) (&h->priority_cfi_and_id);
 
-  return (bytes[0] >> 5);
+  return (bytes[0] >> 4);
 }
 
 /* VLAN with ethertype first and vlan id second */