diff --git a/src/backend/access/transam/commit_ts.c b/src/backend/access/transam/commit_ts.c
index 04a15e4..8d52d45 100644
--- a/src/backend/access/transam/commit_ts.c
+++ b/src/backend/access/transam/commit_ts.c
@@ -884,7 +884,7 @@ AdvanceOldestCommitTsXid(TransactionId oldestXact)
 
 
 /*
- * Decide which of two CLOG page numbers is "older" for truncation purposes.
+ * Decide which of two commitTS page numbers is "older" for truncation purposes.
  *
  * We need to use comparison of TransactionIds here in order to do the right
  * thing with wraparound XID arithmetic.  However, if we are asked about