diff --git a/src/backend/storage/ipc/procarray.c b/src/backend/storage/ipc/procarray.c
index 60b7a5db8e..ad1fdeae25 100644
--- a/src/backend/storage/ipc/procarray.c
+++ b/src/backend/storage/ipc/procarray.c
@@ -207,7 +207,7 @@ typedef struct ComputeXidHorizonsResult
 	 * Oldest xid for which deleted tuples need to be retained in shared
 	 * tables.
 	 *
-	 * This includes the effects of replications lots. If that's not desired,
+	 * This includes the effects of replication slots. If that's not desired,
 	 * look at shared_oldest_nonremovable_raw;
 	 */
 	TransactionId shared_oldest_nonremovable;