diff --git a/kamailio/defs.cfg b/kamailio/defs.cfg
index 6118805..09eefc3 100644
--- a/kamailio/defs.cfg
+++ b/kamailio/defs.cfg
@@ -25,7 +25,7 @@
 
 #!trydef KAZOO_LOG_LEVEL L_INFO
 
-#!trydef PV_BUFFER_SIZE 8192
+#!trydef PV_BUFFER_SIZE 16384
 #!trydef PV_BUFFER_SLOTS 20
 
 #!ifndef KAMAILIO_DBMS