diff --git a/test/de/inetsoftware/jwebassembly/WastTest.js b/test/de/inetsoftware/jwebassembly/WastTest.js
index 8d29f9e..e9c76f3 100644
--- a/test/de/inetsoftware/jwebassembly/WastTest.js
+++ b/test/de/inetsoftware/jwebassembly/WastTest.js
@@ -6,7 +6,8 @@ var wabt = require("wabt")();
 var filename = '{test.wast}';
 var text = nodeFS['readFileSync'](filename, "utf8");
 
-var ret = wabt.parseWat(filename, text);
+var features = {'sat_float_to_int':true, 'sign_extension':true};
+var ret = wabt.parseWat(filename, text, features);
 ret = ret.toBinary({}).buffer;
 
 function instantiate(bytes, imports) {