diff --git a/src/backend/access/nbtree/nbtpreprocesskeys.c b/src/backend/access/nbtree/nbtpreprocesskeys.c
index bf38b71ba2d..d09384a813a 100644
--- a/src/backend/access/nbtree/nbtpreprocesskeys.c
+++ b/src/backend/access/nbtree/nbtpreprocesskeys.c
@@ -1404,7 +1404,7 @@ _bt_skiparray_strat_adjust(IndexScanDesc scan, ScanKey arraysk,
 }
 
 /*
- * Convert skip array's > low_compare key into a >= key
+ * Convert skip array's < high_compare key into a <= key
  */
 static void
 _bt_skiparray_strat_decrement(IndexScanDesc scan, ScanKey arraysk,
@@ -1462,7 +1462,7 @@ _bt_skiparray_strat_decrement(IndexScanDesc scan, ScanKey arraysk,
 }
 
 /*
- * Convert skip array's < low_compare key into a <= key
+ * Convert skip array's > low_compare key into a >= key
  */
 static void
 _bt_skiparray_strat_increment(IndexScanDesc scan, ScanKey arraysk,