diff --git a/storage/innobase/row/row0ins.cc b/storage/innobase/row/row0ins.cc
index dfa5eba955e..c1e328b9e7a 100644
--- a/storage/innobase/row/row0ins.cc
+++ b/storage/innobase/row/row0ins.cc
@@ -2024,15 +2024,11 @@ static bool row_allow_duplicates(que_thr_t *thr) {
           goto end_scan;
         }
         lock_type = LOCK_REC_NOT_GAP;
-      } else if (is_supremum) {
-        /* We use next key lock to possibly combine the locks in bitmap.
-        Equivalent to LOCK_GAP. */
-        lock_type = LOCK_ORDINARY;
       } else if (is_next) {
         /* Only gap lock is required on next record. */
         lock_type = LOCK_GAP;
       } else {
-        /* Next key lock for all equal keys. */
+        /* Next key lock for all equal keys including supremum. */
         lock_type = LOCK_ORDINARY;
       }
       /* We only need to lock locations where duplicates could occur, which