diff --git a/install_amavis.sh b/install_amavis.sh
index ef9071f..401487b 100755
--- a/install_amavis.sh
+++ b/install_amavis.sh
@@ -5390,7 +5390,7 @@ else
    fi
 fi
 
-if ${listen_on_additional_smtp_port}: then
+if ${listen_on_additional_smtp_port}; then
 
    echo ""
    warn "Please do not forget to allow incomming traffic on port \033[1m${additional_smtp_port}\033[m.
diff --git a/install_postfix_advanced.sh b/install_postfix_advanced.sh
index 12f57ae..8e6895f 100755
--- a/install_postfix_advanced.sh
+++ b/install_postfix_advanced.sh
@@ -530,7 +530,7 @@ _SASL_AUTH_ENABLED=$SASL_AUTH_ENABLED
 _SYMPA_LIST_SERVER=$IS_SYMPA_LIST_SERVER
 _LISTEN_ON_ADDITIONAL_RELAY_PORT=${LISTEN_ON_ADDITIONAL_RELAY_PORT}
 EOF
-   if ${LISTEN_ON_ADDITIONAL_RELAY_PORT} : then
+   if ${LISTEN_ON_ADDITIONAL_RELAY_PORT} ; then
       cat << EOF >> $conf_file
 _ADDITIONAL_RELAY_LISTEN_PORT=${ADDITIONAL_RELAY_LISTEN_PORT}
 EOF