diff --git a/changelog.d/12990.misc b/changelog.d/12990.misc
new file mode 100644
index 0000000000..c68f6a731e
--- /dev/null
+++ b/changelog.d/12990.misc
@@ -0,0 +1 @@
+Fix documentation for running complement tests.
diff --git a/scripts-dev/complement.sh b/scripts-dev/complement.sh
index ffd399c39d..30b974b954 100755
--- a/scripts-dev/complement.sh
+++ b/scripts-dev/complement.sh
@@ -18,7 +18,7 @@
 # argument to the script. Complement will then only run those tests. If
 # no regex is supplied, all tests are run. For example;
 #
-# ./complement.sh "TestOutboundFederation(Profile|Send)"
+# ./complement.sh -run "TestOutboundFederation(Profile|Send)"
 #
 
 # Exit if a line returns a non-zero exit code