diff --git a/pg_stat_monitor.c b/pg_stat_monitor.c
index 22038d5..1b68146 100644
--- a/pg_stat_monitor.c
+++ b/pg_stat_monitor.c
@@ -1579,7 +1579,7 @@ pg_stat_monitor_reset(PG_FUNCTION_ARGS)
 	LWLockAcquire(pgss->lock, LW_EXCLUSIVE);
 	hash_entry_dealloc(-1, -1, NULL);
 	/* Reset query buffers. */
-	for (size_t i = 0; i < MAX_BUCKETS; ++i)
+	for (size_t i = 0; i < PGSM_MAX_BUCKETS; ++i)
 	{
 		*(uint64 *)pgss_qbuf[i] = 0;
 	}
diff --git a/regression/expected/guc.out b/regression/expected/guc.out
index 0da2986..ef3da0b 100644
--- a/regression/expected/guc.out
+++ b/regression/expected/guc.out
@@ -26,9 +26,8 @@ SELECT * FROM pg_stat_monitor_settings ORDER BY name COLLATE "C";
  pg_stat_monitor.pgsm_overflow_target     |      1 |             1 | Sets the overflow target for pg_stat_monitor                                                             |       0 |          1 |       1
  pg_stat_monitor.pgsm_query_max_len       |   1024 |          1024 | Sets the maximum length of query.                                                                        |    1024 | 2147483647 |       1
  pg_stat_monitor.pgsm_query_shared_buffer |     20 |            20 | Sets the maximum size of shared memory in (MB) used for query tracked by pg_stat_monitor.                |       1 |      10000 |       1
- pg_stat_monitor.pgsm_track_planning      |      1 |             1 | Selects whether planning statistics are tracked.                                                         |       0 |          0 |       0
  pg_stat_monitor.pgsm_track_utility       |      1 |             1 | Selects whether utility commands are tracked.                                                            |       0 |          0 |       0
-(14 rows)
+(13 rows)
 
 SELECT pg_stat_monitor_reset();
  pg_stat_monitor_reset 
diff --git a/regression/expected/guc_1.out b/regression/expected/guc_1.out
deleted file mode 100644
index 1425109..0000000
--- a/regression/expected/guc_1.out
+++ /dev/null
@@ -1,38 +0,0 @@
-CREATE EXTENSION pg_stat_monitor;
-SELECT pg_stat_monitor_reset();
- pg_stat_monitor_reset 
------------------------
- 
-(1 row)
-
-select pg_sleep(.5);
- pg_sleep 
-----------
- 
-(1 row)
-
-SELECT * FROM pg_stat_monitor_settings ORDER BY name COLLATE "C";
-                   name                   | value  | default_value |                                               description                                                | minimum |  maximum   | restart 
-------------------------------------------+--------+---------------+----------------------------------------------------------------------------------------------------------+---------+------------+---------
- pg_stat_monitor.pgsm_bucket_time         |     60 |            60 | Sets the time in seconds per bucket.                                                                     |       1 | 2147483647 |       1
- pg_stat_monitor.pgsm_enable              |      1 |             1 | Enable/Disable statistics collector.                                                                     |       0 |          0 |       0
- pg_stat_monitor.pgsm_enable_query_plan   |      0 |             0 | Enable/Disable query plan monitoring                                                                     |       0 |          0 |       0
- pg_stat_monitor.pgsm_histogram_buckets   |     10 |            10 | Sets the maximum number of histogram buckets                                                             |       2 | 2147483647 |       1
- pg_stat_monitor.pgsm_histogram_max       | 100000 |        100000 | Sets the time in millisecond.                                                                            |      10 | 2147483647 |       1
- pg_stat_monitor.pgsm_histogram_min       |      0 |             0 | Sets the time in millisecond.                                                                            |       0 | 2147483647 |       1
- pg_stat_monitor.pgsm_max                 |    100 |           100 | Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor. |       1 |       1000 |       1
- pg_stat_monitor.pgsm_max_buckets         |     10 |            10 | Sets the maximum number of buckets.                                                                      |       1 |         10 |       1
- pg_stat_monitor.pgsm_normalized_query    |      1 |             1 | Selects whether save query in normalized format.                                                         |       0 |          0 |       0
- pg_stat_monitor.pgsm_overflow_target     |      0 |             1 | Sets the overflow target for pg_stat_monitor                                                             |       0 |          1 |       1
- pg_stat_monitor.pgsm_query_max_len       |   1024 |          1024 | Sets the maximum length of query.                                                                        |    1024 | 2147483647 |       1
- pg_stat_monitor.pgsm_query_shared_buffer |     20 |            20 | Sets the maximum size of shared memory in (MB) used for query tracked by pg_stat_monitor.                |       1 |      10000 |       1
- pg_stat_monitor.pgsm_track_utility       |      1 |             1 | Selects whether utility commands are tracked.                                                            |       0 |          0 |       0
-(13 rows)
-
-SELECT pg_stat_monitor_reset();
- pg_stat_monitor_reset 
------------------------
- 
-(1 row)
-
-DROP EXTENSION pg_stat_monitor;