diff --git a/src/lib/DocSearch.js b/src/lib/DocSearch.js
index e59043ed..afe5567d 100644
--- a/src/lib/DocSearch.js
+++ b/src/lib/DocSearch.js
@@ -131,7 +131,7 @@ class DocSearch {
 
     if (typeof args.inputSelector !== 'string') {
       throw new Error(
-        `inputSelector:${
+        `Error: inputSelector:${
           args.inputSelector
         }  must be a string. Each selector must match only one element and separated by ','`
       );