diff --git a/src/reactTemplates.js b/src/reactTemplates.js
index 4de2848..818ed71 100644
--- a/src/reactTemplates.js
+++ b/src/reactTemplates.js
@@ -194,7 +194,7 @@ function convertHtmlToReact(node, context) {
 }
 
 function extractDefinesFromJSXTag(html, defines) {
-    html = html.replace(/\<\!doctype jsx\s*(.*?)\s*\>/, function(full, reqStr) {
+    html = html.replace(/\<\!doctype jsx\s*(.*?)\s*\>/i, function(full, reqStr) {
         var match = true;
         while (match) {
             match = false;
@@ -240,7 +240,7 @@ function convertFile(source, target) {
 //        return;// only handle html files
 //    }
     var html = fs.readFileSync(source).toString();
-    if (!html.match(/\<\!doctype jsx/)) {
+    if (!html.match(/\<\!doctype jsx/i)) {
         console.log('invalid file, missing header');
         return;
     }
diff --git a/test/data/repeat.html b/test/data/repeat.html
index 22ff667..3f4e3f8 100644
--- a/test/data/repeat.html
+++ b/test/data/repeat.html
@@ -1,4 +1,4 @@
-<!doctype jsx>
+<!DOCTYPE jsx>
 <p>
     <div rt-repeat="items in this.props.things">
         <span style="width:auto;line-height: 5px;" onClick="(evt)=>this.happend(evt);return false;">Mock</span>