diff --git a/docs/.sample_config_header.yaml b/docs/.sample_config_header.yaml
index 2f2201fdcc..e001ef5983 100644
--- a/docs/.sample_config_header.yaml
+++ b/docs/.sample_config_header.yaml
@@ -1,7 +1,7 @@
 # The config is maintained as an up-to-date snapshot of the default
 # homeserver.yaml configuration generated by Synapse.
 #
-# It is intended to act as a reference for the default configuration, 
+# It is intended to act as a reference for the default configuration,
 # helping admins keep track of new options and other changes, and compare
 # their configs with the current default.  As such, many of the actual
 # config values shown are placeholders.