diff --git a/web/root/msgs/msgs.ssjs b/web/root/msgs/msgs.ssjs
index 2cae259f043721946156eba12a8da5814edf4522..eccf59b52751da3fe4a1db320c1c16040ae28c5e 100644
--- a/web/root/msgs/msgs.ssjs
+++ b/web/root/msgs/msgs.ssjs
@@ -3,6 +3,8 @@
 load("../web/lib/msgslib.ssjs");
 load("../web/lib/mime_decode.ssjs");
 
+if(!msgbase)
+    error("msgbase not defined");
 if(msgbase.open!=undefined && msgbase.open()==false) {
     error(msgbase.last_error);
 }