diff --git a/doorcontrol-main.cgi b/doorcontrol-main.cgi
index 3797e0c..bee439e 100755
--- a/doorcontrol-main.cgi
+++ b/doorcontrol-main.cgi
@@ -8,9 +8,9 @@ LOCKFILE="./doorcontrol-main.lock"
 . parse_query_string.sh
 #
 
-echo 'Content-type: application/json'
-echo ''
-echo ''
+echo "Content-type: application/json"
+echo ""
+echo ""
 
 # Exit if instance already running
 if [ -e "$LOCKFILE" ]; then
@@ -22,7 +22,7 @@ fi
 # Check password
 read apiKey <"${PASSWD_FILE}"
 if [ "${param[apiKey]}" != "${apiKey}" ]; then
-  echo '{"error": "Invalid credentials"}'
+  echo '{"message": "Invalid credentials"}'
   rm "$LOCKFILE"
   exit 1
 fi