diff --git a/lib/hook.io-sparql.coffee b/lib/hook.io-sparql.coffee
index 1136e91..c762d2d 100644
--- a/lib/hook.io-sparql.coffee
+++ b/lib/hook.io-sparql.coffee
@@ -31,7 +31,7 @@ class SPARQLHook extends Hook
     query: (query, cb) ->
         console.log ">>Going to query"
         @client.rows  query, (err, res) ->
-                cb res
+                cb? res
 
     addPreffix: (key,url) ->
         @client.prefix_map[key] = url
diff --git a/package.json b/package.json
index 231c3fd..2201f3f 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "name": "hook.io-sparql",
   "description": "SparQL hook queries",
   "keywords" : [ "hook", "hook.io", "sparql" ],
-  "version": "0.0.2",
+  "version": "0.0.3",
   "bugs" : { "url" : "http://github.com/balkian/hook.io-sparql/issues" },
   "repository": {
     "type": "git",