diff --git a/index.js b/index.js
index c2d7225..a0cfece 100644
--- a/index.js
+++ b/index.js
@@ -51,7 +51,7 @@
     }
     return cb(null, finalJobLogs);
   }).catch(error => {
-    finalJobLogs.errLogs.push(`Error querying Web service:\n${error.message}\n${error.stack()}`);
+    finalJobLogs.errLogs.push(`Error querying Web service:\n${error.message}\n${error.stack}`);
     return cb(handleError(docObjects, error));
   });
 };