diff --git a/scripts/install.sh b/scripts/install.sh
index 0afb353..42dbc04 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -108,7 +108,7 @@ echo "Setting up firewall (iptables)"
 if [ -f "/etc/iptables/rules.v4" ]; then
     echo "Caution: iptables rules exist."
 
-    read -p "Would you like to Clear (C) existing iptables rules or Add (A) to existing rules (this may cause problems)?" MISTBORN_IPTABLES_ACTION
+    read -p "Would you like to Clear (C) existing iptables rules or Add (A) to existing rules (this may cause problems)? [c/a]" MISTBORN_IPTABLES_ACTION
     echo
 
     if [[ "${MISTBORN_IPTABLES_ACTION}" =~ ^([cC])$ ]]; then