diff --git a/docs/topics/db/aggregation.txt b/docs/topics/db/aggregation.txt
index b0731798c51c0..c2271f7552a29 100644
--- a/docs/topics/db/aggregation.txt
+++ b/docs/topics/db/aggregation.txt
@@ -1,8 +1,8 @@
 .. _topics-db-aggregation:
 
-=============
- Aggregation
-=============
+===========
+Aggregation
+===========
 
 .. versionadded:: 1.1