diff --git a/APPL/EXP/exp_shared.js b/APPL/EXP/exp_shared.js
index b91209b30e..913b04eb9c 100644
--- a/APPL/EXP/exp_shared.js
+++ b/APPL/EXP/exp_shared.js
@@ -161,7 +161,7 @@ function exportToStream(params, exportFile)
     else
     {
         var fstr;
-        var toMulti = ini.fileprefix.charAt(0) == "*";
+        var toMulti = params.fileprefix.charAt(0) == "*";
         if (toMulti)
         {
             var last_filename;