diff --git a/app/src/main/java/io/legado/app/model/SharedJsScope.kt b/app/src/main/java/io/legado/app/model/SharedJsScope.kt
index 3ddee85ce..7e14f596d 100644
--- a/app/src/main/java/io/legado/app/model/SharedJsScope.kt
+++ b/app/src/main/java/io/legado/app/model/SharedJsScope.kt
@@ -70,6 +70,13 @@ object SharedJsScope {
             if (scope is ScriptableObject) {
                 scope.sealObject()
             }
+            if (scope is Map<*, *>) {
+                scope.entries.forEach {
+                    if (it is ScriptableObject) {
+                        it.sealObject()
+                    }
+                }
+            }
             scopeMap[key] = WeakReference(scope)
         }
         return scope