diff --git a/lib/client.js b/lib/client.js
index 0e2b5b1..66e9fd3 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -81,7 +81,7 @@ var SparqlClient = module.exports = function (endpoint, options) {
     };
 
     var sparqlRequest = function sparqlRequest(query, callback) {
-        if (query.indexOf("INSERT DATA") == -1 && query.indexOf("DELETE") == -1) {
+        if (query.indexOf("INSERT DATA") == -1 && query.indexOf("DELETE") == -1 && query.indexOf("INSERT") == -1) {
             var requestBody = _.extend(defaultParameters, {
                 query: query
             });