diff --git a/lib/functionsEmulator.js b/lib/functionsEmulator.js
index 198dd7e1..47bc5963 100644
--- a/lib/functionsEmulator.js
+++ b/lib/functionsEmulator.js
@@ -187,7 +187,7 @@ FunctionsEmulator.prototype.start = function(shellMode) {
     }
   }).catch(function(e) {
     if (e) {
-      utils.logWarning(chalk.yellow('functions:') + ' Error from emulator. ' + e.stack);
+      utils.logWarning(chalk.yellow('functions:') + ' Error from emulator. ' + e);
     }
     return instance.stop();
   });