diff --git a/corpus/round-trip/block-nodes/empty-keys.json b/corpus/round-trip/block-nodes/empty-keys.json
index 3fcc6d2..725bfee 100644
--- a/corpus/round-trip/block-nodes/empty-keys.json
+++ b/corpus/round-trip/block-nodes/empty-keys.json
@@ -82,6 +82,13 @@
       },
       "marks": [],
       "type": "codeBlock"
+    },
+    {
+      "attrs": {
+        "language": "js"
+      },
+      "content": [],
+      "type": "codeBlock"
     }
   ],
   "type": "doc",
diff --git a/corpus/round-trip/block-nodes/empty-keys.md b/corpus/round-trip/block-nodes/empty-keys.md
index 04299da..cad1dfd 100644
--- a/corpus/round-trip/block-nodes/empty-keys.md
+++ b/corpus/round-trip/block-nodes/empty-keys.md
@@ -30,3 +30,6 @@ Next
 ```js
 ```
 !adf:/codeBlock
+
+!adf:codeBlock {content=empty language=js}
+!adf:/codeBlock