diff --git a/p4src/static-mapping.p4 b/p4src/static-mapping.p4
index 55311f9..6a4bece 100644
--- a/p4src/static-mapping.p4
+++ b/p4src/static-mapping.p4
@@ -351,8 +351,8 @@ Echo or Echo Reply Message
         hdr.arp.src_mac_addr  = mac_src;
 
         /* swapping */
-        hdr.arp.dst_ipv4_addr = ipv4_src;
-        hdr.arp.src_ipv4_addr = ipv4_dst;
+        hdr.arp.dst_ipv4_addr = ipv4_dst;
+        hdr.arp.src_ipv4_addr = ipv4_src;
 
         hdr.arp.opcode = ARP_REPLY;
     }