diff --git a/.pullapprove.yml b/.pullapprove.yml
new file mode 100644
index 00000000..ae786ecf
--- /dev/null
+++ b/.pullapprove.yml
@@ -0,0 +1,14 @@
+approve_by_comment: true
+approve_regex: '^(Approved|:shipit:|:\+1:)'
+reject_regex: '^(Rejected|:-1:)'
+reset_on_push: true
+author_approval: required
+reviewers:
+  members:
+  - brantje
+  - dschaper
+  - jacobsalmela
+  - Mcat12
+  - PromoFaux
+  name: pullapprove
+  required: 3
diff --git a/advanced/Scripts/whitelist.sh b/advanced/Scripts/whitelist.sh
index 266ac49e..5195aa83 100755
--- a/advanced/Scripts/whitelist.sh
+++ b/advanced/Scripts/whitelist.sh
@@ -175,20 +175,23 @@ function ModifyHostFile(){
 	    echo ":::"
 	    echo "::: Modifying HOSTS file to un-whitelist domains..."
 	    for rdom in "${domToRemoveList[@]}"
-	    do
-	    	if [[ -n $piholeIPv6 ]];then
-	    	  echo -n ":::    Un-whitelisting $rdom on IPv4 and IPv6..."
-	    	  echo "$rdom" | awk -v ipv4addr="$piholeIP" -v ipv6addr="$piholeIPv6" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> $adList
-	    	  echo " done!"
-	      else
-	        echo -n ":::    Un-whitelisting $rdom on IPv4"
-	      	echo "$rdom" | awk -v ipv4addr="$piholeIP" '{sub(/\r$/,""); print ipv4addr" "$0}' >>$adList
-	      	echo " done!"
-	      fi
-	      echo -n ":::        Removing $rdom from $whitelist..."
-	      echo "$rdom" | sed 's/\./\\./g' | xargs -I {} perl -i -ne'print unless /'{}'(?!.)/;' $whitelist
-	      echo " done!"
-	    done
+        do
+          if grep -q "$rdom" /etc/pihole/*.domains; then
+            echo ":::    AdLists contain $rdom, re-adding block"
+            if [[ -n $piholeIPv6 ]];then
+              echo -n ":::        Restoring block for $rdom on IPv4 and IPv6..."
+              echo "$rdom" | awk -v ipv4addr="$piholeIP" -v ipv6addr="$piholeIPv6" '{sub(/\r$/,""); print ipv4addr" "$0"\n"ipv6addr" "$0}' >> $adList
+              echo " done!"
+            else
+              echo -n ":::        Restoring block for $rdom on IPv4..."
+              echo "$rdom" | awk -v ipv4addr="$piholeIP" '{sub(/\r$/,""); print ipv4addr" "$0}' >>$adList
+              echo " done!"
+            fi
+          fi
+          echo -n ":::    Removing $rdom from $whitelist..."
+          echo "$rdom" | sed 's/\./\\./g' | xargs -I {} perl -i -ne'print unless /'{}'(?!.)/;' $whitelist
+          echo " done!"
+        done
 	  fi
 }