diff --git a/lib/codegen.js b/lib/codegen.js
index 6a7ded09..54dbe7ef 100644
--- a/lib/codegen.js
+++ b/lib/codegen.js
@@ -8,7 +8,7 @@ var _ = require('lodash');
 var ts = require('./typescript');
 
 var normalizeName = function(id) {
-    return id.replace(/\.|\-|\{|\}/g, '_');
+    return id.replace(/\.|\-|\{|\}|\s/g, '_');
 };
 
 var getPathToMethodName = function(opts, m, path){