diff --git a/rule-tests/__snapshots__/empty-hook-snapshot.yml b/rule-tests/__snapshots__/empty-hook-snapshot.yml
index ea8d921..e3f08d2 100644
--- a/rule-tests/__snapshots__/empty-hook-snapshot.yml
+++ b/rule-tests/__snapshots__/empty-hook-snapshot.yml
@@ -15,3 +15,18 @@ snapshots:
       style: secondary
       start: 8
       end: 10
+  type X = unit { on %done {} };:
+    fixed: type X = unit {  };
+    labels:
+    - source: on %done {}
+      style: primary
+      start: 16
+      end: 27
+    - source: '{}'
+      style: secondary
+      start: 25
+      end: 27
+    - source: '{}'
+      style: secondary
+      start: 25
+      end: 27
diff --git a/rule-tests/empty-hook-test.yml b/rule-tests/empty-hook-test.yml
index 20a658c..e7b31b0 100644
--- a/rule-tests/empty-hook-test.yml
+++ b/rule-tests/empty-hook-test.yml
@@ -2,5 +2,7 @@ id: empty-hook
 valid:
   - "on X::x {1;}"
   - "on X::x {1;2;}"
+  - "type X = unit { on %done {1;} };"
 invalid:
   - "on X::x {}"
+  - "type X = unit { on %done {} };"