diff --git a/comment.sh b/comment.sh
new file mode 100755
index 0000000..b127c00
--- /dev/null
+++ b/comment.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+PR_NR=$TRAVIS_PULL_REQUEST
+
+function performQuery() {
+    NEW_QUERY_STR="{\"query\":\"$1\"}"
+    curl -s -H "Authorization: bearer $COMMENT_TOKEN" -X POST -d $NEW_QUERY_STR https://api.github.com/graphql
+}
+
+RESULT=$(performQuery "{repository(owner:\\\"ZeusWPI\\\",name:\\\"zeus.ugent.be\\\"){pullRequest(number:$PR_NR){id,comments(first:10){nodes{author{login}}}}}}")
+
+if [ $? -ne 0 ]; then
+    echo "QUERY FAILED, RESULT: $RESULT"
+    exit 1
+fi
+
+# Get the GraphQL ID
+PR_ID=$(echo $RESULT | sed 's/.*"id":"\([^"]*\)".*/\1/')
+
+# TODO: Have another user do the commenting
+if [[ $RESULT == *"werthen"* ]]; then
+    echo "User has already commented"
+else
+    ADD_COMMENT_STR="mutation{addComment(input:{subjectId:\\\"$PR_ID\\\",body:\\\"Check out the preview on https://$PR_NR.pr.zeus.gent/\\\"}){clientMutationId}}"
+    performQuery $ADD_COMMENT_STR
+fi
+
+
diff --git a/deploy.sh b/deploy.sh
index 398c902..bca91df 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -8,4 +8,5 @@ if [[ $TRAVIS_PULL_REQUEST == "false" ]]; then
   fi
 else
   rsync -e 'ssh -p 2222' -aglpPrtvz --delete output/ "zeuspr@herbert.ugent.be:/home/zeuspr/public/$TRAVIS_PULL_REQUEST/"
+  ./comment.sh
 fi