diff --git a/src/backend/replication/logical/proto.c b/src/backend/replication/logical/proto.c
index 504f94d4a7..d52c8963eb 100644
--- a/src/backend/replication/logical/proto.c
+++ b/src/backend/replication/logical/proto.c
@@ -1216,7 +1216,7 @@ logicalrep_read_stream_abort(StringInfo in,
 const char *
 logicalrep_message_type(LogicalRepMsgType action)
 {
-	static char	err_unknown[20];
+	static char err_unknown[20];
 
 	switch (action)
 	{