diff --git a/changelog.d/4110.misc b/changelog.d/4110.misc
new file mode 100644
index 000000000..a50327ae3
--- /dev/null
+++ b/changelog.d/4110.misc
@@ -0,0 +1 @@
+Fix `synapse_replication_tcp_protocol_*_commands` metric label to be full command name, rather than just the first character