diff --git a/p4src/netpfga_nat64.p4 b/p4src/netpfga_nat64.p4
index c15572f..6727411 100644
--- a/p4src/netpfga_nat64.p4
+++ b/p4src/netpfga_nat64.p4
@@ -1,4 +1,7 @@
-        if(hdr.ipv6.isValid()) {
+bool apply_v6networks = false;
+bool apply_v4networks = false;
+
+if(hdr.ipv6.isValid()) {
             apply_v6networks = true;
 
             if(nat64.apply().hit) { /* generic / static nat64 done */