diff --git a/src/backend/replication/slot.c b/src/backend/replication/slot.c
index 29749ce917..4eb679e187 100644
--- a/src/backend/replication/slot.c
+++ b/src/backend/replication/slot.c
@@ -1598,11 +1598,11 @@ ReportSlotInvalidation(ReplicationSlotInvalidationCause cause,
  * Idle timeout invalidation is allowed only when:
  *
  * 1. Idle timeout is set
- * 2. Slot has WAL reserved
+ * 2. Slot has reserved WAL
  * 3. Slot is inactive
- * 4. The slot is not being synced from the primary while the server
- *    is in recovery. As synced slots are always considered to be inactive
- *    because they don't perform logical decoding to produce changes.
+ * 4. The slot is not being synced from the primary while the server is in
+ *	  recovery. This is because synced slots are always considered to be
+ *	  inactive because they don't perform logical decoding to produce changes.
  */
 static inline bool
 CanInvalidateIdleSlot(ReplicationSlot *s)
@@ -1662,7 +1662,7 @@ InvalidatePossiblyObsoleteSlot(ReplicationSlotInvalidationCause cause,
 		if (cause == RS_INVAL_IDLE_TIMEOUT)
 		{
 			/*
-			 * Assign the current time here to reduce system call overhead
+			 * Assign the current time here to avoid system call overhead
 			 * while holding the spinlock in subsequent code.
 			 */
 			now = GetCurrentTimestamp();