diff --git a/automated install/basic-install.sh b/automated install/basic-install.sh
index e6deca29..c20308ab 100755
--- a/automated install/basic-install.sh	
+++ b/automated install/basic-install.sh	
@@ -393,14 +393,14 @@ setDNS(){
 						exit 1
 					fi
 					
-					if [ $piholeDNS1 == $strInvalid ] || [ $piholeDNS2 == $strInvalid ]; then
+					if [[ $piholeDNS1 == $strInvalid ]] || [[ $piholeDNS2 == $strInvalid ]]; then
 						whiptail --msgbox --backtitle "Invalid IP" --title "Invalid IP" "One or both entered IP addresses were invalid. Please try again.\n\n    DNS Server 1:   $piholeDNS1\n    DNS Server 2:   $piholeDNS2" $r $c						
 						
-						if [ $piholeDNS1 == $strInvalid ]; then
+						if [[ $piholeDNS1 == $strInvalid ]]; then
 							piholeDNS1=""
 						fi
 						
-						if [ $piholeDNS2 == $strInvalid ]; then
+						if [[ $piholeDNS2 == $strInvalid ]]; then
 							piholeDNS2=""
 						fi