diff --git a/lib/script/script_manager.dart b/lib/script/script_manager.dart
index 7fe56d375..9ebdd7ec1 100644
--- a/lib/script/script_manager.dart
+++ b/lib/script/script_manager.dart
@@ -119,6 +119,9 @@ class ScriptManager {
     if (_scriptCache == null) return null;
 
     try {
+      if(_runtime == null){
+        _initRuntime();
+      }
       var downloadUrl =
           _runtime.evaluate("create_download_url('$id')").stringResult;
       var headers = await runHitomiGetHeaderContent(id.toString());