diff --git a/scripts/subinstallers/ip6tables.sh b/scripts/subinstallers/ip6tables.sh
index 5ab886d..654664a 100755
--- a/scripts/subinstallers/ip6tables.sh
+++ b/scripts/subinstallers/ip6tables.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+set -e
 
 # resetting ip6tables rules
 sudo ip6tables -F
diff --git a/scripts/subinstallers/iptables_cleanup.sh b/scripts/subinstallers/iptables_cleanup.sh
index 7ecad95..f7b0bdc 100755
--- a/scripts/subinstallers/iptables_cleanup.sh
+++ b/scripts/subinstallers/iptables_cleanup.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 
+set -e
 
 # iptables-persistent
 if [ ! "$(dpkg-query -l iptables-persistent)" ]; then
diff --git a/scripts/subinstallers/iptables_docker.sh b/scripts/subinstallers/iptables_docker.sh
index 2dfa95e..5a2c987 100755
--- a/scripts/subinstallers/iptables_docker.sh
+++ b/scripts/subinstallers/iptables_docker.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 source ./scripts/subinstallers/vars.sh
 
 sudo iptables -N DOCKER-USER || true