diff --git a/zpush/start.sh b/zpush/start.sh
index 1077271..0b9c3ef 100755
--- a/zpush/start.sh
+++ b/zpush/start.sh
@@ -2,7 +2,7 @@
 
 # define default value for serverhostname, serverport, additional packages and shared folders  if not passed into container
 KCCONF_SERVERHOSTNAME=${KCCONF_SERVERHOSTNAME:-127.0.0.1}
-KCCONF_SERVERPORT=${KCCONF_SERVERPORT:-236}
+KCCONF_SERVERPORT=${KCCONF_SERVERPORT:-237}
 ADDITIONAL_KOPANO_PACKAGES=${ADDITIONAL_KOPANO_PACKAGES:-""}
 ZPUSH_ADDITIONAL_FOLDERS=${ZPUSH_ADDITIONAL_FOLDERS:-"[]"}