diff --git a/test/test_nat.py b/test/test_nat.py
index ccc9be7..a678621 100644
--- a/test/test_nat.py
+++ b/test/test_nat.py
@@ -2863,7 +2863,7 @@
         self.pg_start()
         self.pg1.assert_nothing_captured()
         sleep(1)
-        self.vapi.cli("ipfix flush")
+        self.vapi.ipfix_flush()
         capture = self.pg3.get_capture(9)
         ipfix = IPFIXDecoder()
         # first load template