diff --git a/module/documents/item.mjs b/module/documents/item.mjs
index fb558e8c..8492f068 100644
--- a/module/documents/item.mjs
+++ b/module/documents/item.mjs
@@ -28,6 +28,14 @@ export default class DHItem extends foundry.documents.Item {
         return doc;
     }
 
+    /* -------------------------------------------- */
+
+    /** @inheritDoc */
+    static migrateData(source) {
+        if(source.system?.attack && !source.system.attack.type) source.system.attack.type = "attack";
+        return super.migrateData(source);
+    }
+
     /**
      * @inheritdoc
      * @param {object} options - Options which modify the getRollData method.