diff --git a/lib/plugins/leetcode.js b/lib/plugins/leetcode.js
index 0ce3a66e..19afecf4 100644
--- a/lib/plugins/leetcode.js
+++ b/lib/plugins/leetcode.js
@@ -261,7 +261,13 @@ function formatResult(result) {
     x.expected_answer = result.expected_output;
     x.stdout = result.std_output;
   } else {
-    x.stdout = util.inspect((result.code_output || []).join('\n'));
+    if (typeof(result.code_output) === 'string') {
+        x.stdout = util.inspect(result.code_output);
+    } else if (Array.isArray(result.code_output)) {
+        x.stdout = util.inspect(result.code_output.join('\n'));
+    } else {
+        x.stdout = util.inspect('');
+    }
   }
 
   // make sure we pass eveything!