diff --git a/netpfga/minip4/testdata/gen_testdata_nat64_500byte.py b/netpfga/minip4/testdata/gen_testdata_nat64_500byte.py
index 5d844d2..4457ad0 100755
--- a/netpfga/minip4/testdata/gen_testdata_nat64_500byte.py
+++ b/netpfga/minip4/testdata/gen_testdata_nat64_500byte.py
@@ -104,7 +104,7 @@ lookup_table = {
 
 def test_nat64():
     """ packets for a certain mac always go to nf0 """
-    pktCnt = 1
+    pkgCnt = 1
 
 
     # From v4 to v6