diff --git a/lib/modules/profiler/index.js b/lib/modules/profiler/index.js
index 3f260c5a..5794f779 100644
--- a/lib/modules/profiler/index.js
+++ b/lib/modules/profiler/index.js
@@ -66,7 +66,7 @@ class Profiler {
 
         self.profileJSON(contractName, (err, table) => {
           if (err) {
-            return res.send({error: err});
+            return res.send({error: err.message});
           }
           res.send(table);
         });