diff --git a/changelog.d/19435.doc b/changelog.d/19435.doc
new file mode 100644
index 0000000000..4edf2f73dc
--- /dev/null
+++ b/changelog.d/19435.doc
@@ -0,0 +1 @@
+Fix reference to the `experimental_features` section of config.
diff --git a/docs/development/experimental_features.md b/docs/development/experimental_features.md
index 5a86017ecf..a852fb88fd 100644
--- a/docs/development/experimental_features.md
+++ b/docs/development/experimental_features.md
@@ -32,7 +32,7 @@ expected and not an issue.
 It is not a requirement for experimental features to be behind a configuration flag,
 but one should be used if unsure.
 
-New experimental configuration flags should be added under the `experimental`
+New experimental configuration flags should be added under the `experimental_features`
 configuration key (see the `synapse.config.experimental` file) and either explain
 (briefly) what is being enabled, or include the MSC number.
 The configuration flag should link to the tracking issue for the experimental feature (see below).