diff --git a/src/vpp-api/python/pneum/pneum.c b/src/vpp-api/python/pneum/pneum.c
index b805f04..37c8d8f 100644
--- a/src/vpp-api/python/pneum/pneum.c
+++ b/src/vpp-api/python/pneum/pneum.c
@@ -126,7 +126,8 @@
 }
 
 int
-pneum_connect (char * name, char * chroot_prefix, pneum_callback_t cb)
+pneum_connect (char * name, char * chroot_prefix, pneum_callback_t cb, 
+               int rx_qlen)
 {
   int rv = 0;
   pneum_main_t *pm = &pneum_main;
@@ -139,7 +140,7 @@
     return rv;
   }
 
-  if (vl_client_connect(name, 0, 32) < 0) {
+  if (vl_client_connect(name, 0, rx_qlen) < 0) {
     vl_client_api_unmap();
     return (-1);
   }