diff --git a/test/test_memif.py b/test/test_memif.py
index 1f98e3f..d89e06b 100644
--- a/test/test_memif.py
+++ b/test/test_memif.py
@@ -250,8 +250,9 @@
         dst_addr = socket.inet_pton(socket.AF_INET, self.pg0._local_ip4_subnet)
         dst_addr_len = 24
         next_hop_addr = socket.inet_pton(socket.AF_INET, memif.ip4_addr)
-        self.remote_test.vapi.ip_add_del_route(
-            dst_addr, dst_addr_len, next_hop_addr)
+        self.remote_test.vapi.ip_add_del_route(dst_address=dst_addr,
+                                               dst_address_length=dst_addr_len,
+                                               next_hop_address=next_hop_addr)
 
         # create ICMP echo-request from local pg to remote memif
         packet_num = 10