diff --git a/tests/test_discord_grouping.py b/tests/test_discord_grouping.py
index f5e3fe3..928c197 100644
--- a/tests/test_discord_grouping.py
+++ b/tests/test_discord_grouping.py
@@ -367,7 +367,14 @@ async def test_the_sweep_is_a_no_op_when_the_switch_is_off(db):
     await db.commit()
 
     result = await sweep(db)
-    assert result == {"enabled": False, "sources": 0, "posts_created": 0}
+    # Exact equality on purpose, not a subset check: a disabled sweep reports a
+    # COMPLETE zeroed shape rather than a shorter one, so a caller can read any
+    # counter unconditionally. (Today's caller short-circuits on `enabled`, so
+    # nothing would KeyError — the point is that it does not HAVE to.) E3 adding
+    # `images_joined` broke this assertion, which is exactly what it is for.
+    assert result == {
+        "enabled": False, "sources": 0, "posts_created": 0, "images_joined": 0,
+    }
 
 
 @pytest.mark.asyncio