diff --git a/cadmium-playercore-shim.js b/cadmium-playercore-shim.js
index 70f2166..9dbf41b 100644
--- a/cadmium-playercore-shim.js
+++ b/cadmium-playercore-shim.js
@@ -169,11 +169,11 @@ do_patch(
 	"preferredTextLocale: globalOptions.preferredTextLocale"
 );
 
-if(globalOptions.useDDPlus) {
+if(globalOptions.useDDPlus && MediaSource.isTypeSupported('audio/mp4; codecs="ec-3"')) {
 	do_patch(
 		"Select highest audio bitrate 1",
-		/(indexOf\(z\))(\?[^?]+)/,
-		"$1)"
+		/(indexOf\(.\))(\?[^?]+)(\?[0-9]:)/,
+		"$1)$3"
 	);
 
 	do_patch(
diff --git a/manifest.json b/manifest.json
index bff78bf..3bf5b6b 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
 	"manifest_version": 2,
 	"name": "Netflix International",
 	"description": "Displays all available Netflix audio and subtitle tracks.",
-	"version": "2.0.18",
+	"version": "2.0.19",
 	"author": "shirt",
 	"browser_action": {
 	  "default_icon": "img/icon128.png",