diff --git a/CHANGES.md b/CHANGES.md
index 766b90dd4c..61d826a06b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -36,6 +36,7 @@ If you are running Synapse with Python 3.8, please upgrade to Python 3.9 (or gre
 - Fix tests to run with latest Twisted. ([\#17906](https://github.com/element-hq/synapse/pull/17906), [\#17907](https://github.com/element-hq/synapse/pull/17907), [\#17911](https://github.com/element-hq/synapse/pull/17911))
 - Update version constraint to allow the latest poetry-core 1.9.1. ([\#17902](https://github.com/element-hq/synapse/pull/17902))
 - Update the portdb CI to use Python 3.13 and Postgres 17 as latest dependencies. ([\#17909](https://github.com/element-hq/synapse/pull/17909))
+- Add an index to `current_state_delta_stream` table. ([\#17912](https://github.com/element-hq/synapse/issues/17912))
 
 ### Updates to locked dependencies
 
diff --git a/changelog.d/17912.misc b/changelog.d/17912.misc
deleted file mode 100644
index f6f661476a..0000000000
--- a/changelog.d/17912.misc
+++ /dev/null
@@ -1 +0,0 @@
-Add an index to `current_state_delta_stream` table.