diff --git a/sisr1/tp06-firewall/current_ruleset.nft b/sisr1/tp06-firewall/current_ruleset.nft
index 2c612d7..5bf849f 100644
--- a/sisr1/tp06-firewall/current_ruleset.nft
+++ b/sisr1/tp06-firewall/current_ruleset.nft
@@ -25,7 +25,7 @@ table ip ipfilter {
  	chain routing {
                 type filter hook forward priority filter; policy drop;
                 icmp type echo-request iif $lanif oif $dmzif accept
-                icmp type echo-request iif $dmzif oif $lanif accept
+                icmp type echo-reply iif $dmzif oif $lanif accept
         }
  	chain system_out {
                 type filter hook output priority filter; policy drop;
diff --git a/sisr1/tp06-firewall/fw_part3.nft b/sisr1/tp06-firewall/fw_part3.nft
index 2c612d7..5bf849f 100644
--- a/sisr1/tp06-firewall/fw_part3.nft
+++ b/sisr1/tp06-firewall/fw_part3.nft
@@ -25,7 +25,7 @@ table ip ipfilter {
  	chain routing {
                 type filter hook forward priority filter; policy drop;
                 icmp type echo-request iif $lanif oif $dmzif accept
-                icmp type echo-request iif $dmzif oif $lanif accept
+                icmp type echo-reply iif $dmzif oif $lanif accept
         }
  	chain system_out {
                 type filter hook output priority filter; policy drop;