diff --git a/src/backend/postmaster/pgstat.c b/src/backend/postmaster/pgstat.c
index e6fecc2c3f..375a98a6be 100644
--- a/src/backend/postmaster/pgstat.c
+++ b/src/backend/postmaster/pgstat.c
@@ -1458,7 +1458,12 @@ pgstat_reset_replslot_counter(const char *name)
 	{
 		ReplicationSlot *slot;
 
-		/* Existence check if the slot name is specified */
+		/*
+		 * Check if the slot exits with the given name. It is possible that
+		 * by the time this message is executed the slot is dropped but at
+		 * least this check will ensure that the given name is for a valid
+		 * slot.
+		 */
 		LWLockAcquire(ReplicationSlotControlLock, LW_SHARED);
 		slot = SearchNamedReplicationSlot(name);
 		LWLockRelease(ReplicationSlotControlLock);
diff --git a/src/include/pgstat.h b/src/include/pgstat.h
index cd4e5d9180..c0d805f501 100644
--- a/src/include/pgstat.h
+++ b/src/include/pgstat.h
@@ -360,7 +360,7 @@ typedef struct PgStat_MsgResetslrucounter
 
 /* ----------
  * PgStat_MsgResetreplslotcounter Sent by the backend to tell the collector
- *								to reset replicatino slot counter(s)
+ *								to reset replication slot counter(s)
  * ----------
  */
 typedef struct PgStat_MsgResetreplslotcounter