diff --git a/guc.c b/guc.c
index c98d3ce..624f50e 100644
--- a/guc.c
+++ b/guc.c
@@ -1,6 +1,7 @@
 /*-------------------------------------------------------------------------
  *
- * guc.c: guc variable handling of pg_stat_monitor
+ * guc.c
+ *	  guc variable handling of pg_stat_monitor
  *
  * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
  *
@@ -8,7 +9,6 @@
  *
  * Portions Copyright (c) 1994, The Regents of the University of California
  *
- *
  * IDENTIFICATION
  *	  contrib/pg_stat_monitor/guc.c
  *
diff --git a/hash_query.c b/hash_query.c
index c18e20f..cbc0871 100644
--- a/hash_query.c
+++ b/hash_query.c
@@ -1,7 +1,7 @@
 /*-------------------------------------------------------------------------
  *
  * hash_query.c
- *		Track statement execution times across a whole database cluster.
+ *	  Track statement execution times across a whole database cluster.
  *
  * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
  *
diff --git a/pg_stat_monitor.c b/pg_stat_monitor.c
index a2729cf..56a9566 100644
--- a/pg_stat_monitor.c
+++ b/pg_stat_monitor.c
@@ -1,3 +1,5 @@
+
+
 /*-------------------------------------------------------------------------
  *
  * pg_stat_monitor.c
diff --git a/pg_stat_monitor.h b/pg_stat_monitor.h
index 9cd590d..0466cc7 100644
--- a/pg_stat_monitor.h
+++ b/pg_stat_monitor.h
@@ -1,7 +1,7 @@
 /*-------------------------------------------------------------------------
  *
  * pg_stat_monitor.h
- *		Track statement execution times across a whole database cluster.
+ *	  Track statement execution times across a whole database cluster.
  *
  * Portions Copyright © 2018-2020, Percona LLC and/or its affiliates
  *