diff --git a/doc/fixes3-7-0.txt b/doc/fixes3-7-0.txt
index 0aca9b3fa..69eb14bba 100644
--- a/doc/fixes3-7-0.txt
+++ b/doc/fixes3-7-0.txt
@@ -1,4 +1,4 @@
-$NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.1317 $ $NHDT-Date: 1701500708 2023/12/02 07:05:08 $
+$NHDT-Branch: (unknown) $:$NHDT-Revision: 1.1339 $ $NHDT-Date: 1702264272 2023/12/11 03:11:12 $
 
 General Fixes and Modified Features
 -----------------------------------
@@ -1329,6 +1329,7 @@ avoid impossible "trapped without a trap (fmon)" from 'sanity_check' when a
 	non-flyer monster survived that it got marked as trapped even though
 	flooding deleted the trap
 demons cannot be frightened by showing them their reflection
+HP regeneration formula has changed, primarily to be less fast in the endgame
 
 
 Fixes to 3.7.0-x General Problems Exposed Via git Repository
diff --git a/src/allmain.c b/src/allmain.c
index dbe9b0fe7..f0bf8e8e6 100644
--- a/src/allmain.c
+++ b/src/allmain.c
@@ -605,24 +605,10 @@ regen_hp(int wtcap)
            once u.mh reached u.mhmax; that may have been convenient
            for the player, but it didn't make sense for gameplay...] */
         if (u.uhp < u.uhpmax && (encumbrance_ok || U_CAN_REGEN())) {
-            if (u.ulevel > 9) {
-                if (!(gm.moves % 3L)) {
-                    int Con = (int) ACURR(A_CON);
+            heal = (u.ulevel + (int)ACURR(A_CON)) > rn2(100);
 
-                    if (Con <= 12) {
-                        heal = 1;
-                    } else {
-                        heal = rnd(Con);
-                        if (heal > u.ulevel - 9)
-                            heal = u.ulevel - 9;
-                    }
-                }
-            } else { /* u.ulevel <= 9 */
-                if (!(gm.moves % (long) ((MAXULEV + 12) / (u.ulevel + 2) + 1)))
-                    heal = 1;
-            }
-            if (U_CAN_REGEN() && !heal)
-                heal = 1;
+            if (U_CAN_REGEN())
+                heal += 1;
             if (Sleepy && u.usleep)
                 heal++;