diff --git a/env_vars/.env_agent b/env_vars/.env_agent
index 04e3e800b..e749424e9 100644
--- a/env_vars/.env_agent
+++ b/env_vars/.env_agent
@@ -12,6 +12,7 @@
 # ZBX_ACTIVE_ALLOW=true
 # ZBX_ACTIVESERVERS=
 # ZBX_LISTENIP=
+# ZBX_LISTENPORT=10050
 # ZBX_LISTENBACKLOG=
 # ZBX_STARTAGENTS=10
 # ZBX_HOSTNAME=
diff --git a/env_vars/.env_java b/env_vars/.env_java
index f3015326e..f514e7b5a 100644
--- a/env_vars/.env_java
+++ b/env_vars/.env_java
@@ -1,3 +1,5 @@
+# ZBX_LISTEN_IP=
+# ZBX_LISTEN_PORT=10052
 # ZBX_START_POLLERS=5
 # ZBX_TIMEOUT=3
 # Possible values: trace, debug, info, want, error, all, off
diff --git a/env_vars/.env_prx b/env_vars/.env_prx
index cc2e77728..d617a0dd0 100644
--- a/env_vars/.env_prx
+++ b/env_vars/.env_prx
@@ -40,6 +40,7 @@
 # ZBX_VMWARETIMEOUT=10
 # ZBX_ENABLE_SNMP_TRAPS=false
 # ZBX_LISTENIP=
+# ZBX_LISTENPORT=10051
 # ZBX_LISTENBACKLOG=
 # ZBX_HOUSEKEEPINGFREQUENCY=1
 # ZBX_CACHESIZE=8M
diff --git a/env_vars/.env_srv b/env_vars/.env_srv
index b133e43b5..a98fe580a 100644
--- a/env_vars/.env_srv
+++ b/env_vars/.env_srv
@@ -1,4 +1,5 @@
 # ZBX_LISTENIP=
+# ZBX_LISTENPORT=10051
 # ZBX_LISTENBACKLOG=
 # ZBX_HISTORYSTORAGEURL=http://elasticsearch:9200/ # Available since 3.4.5
 # ZBX_HISTORYSTORAGETYPES=uint,dbl,str,log,text # Available since 3.4.5