diff --git a/src/dig.c b/src/dig.c
index 00f2f0422..c0c341248 100644
--- a/src/dig.c
+++ b/src/dig.c
@@ -1642,6 +1642,7 @@ zap_dig(void)
             if (diridx != DIR_ERR
                 && !conjoined_pits(adjpit, trap_with_u, FALSE)) {
                 digdepth = 0; /* limited to the adjacent location only */
+                nhUse(digdepth);
                 if (!(adjpit && is_pit(adjpit->ttyp))) {
                     char buf[BUFSZ];
 
diff --git a/src/do.c b/src/do.c
index 4f633979a..41828b8ac 100644
--- a/src/do.c
+++ b/src/do.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	do.c	$NHDT-Date: 1704225560 2024/01/02 19:59:20 $  $NHDT-Branch: keni-luabits2 $:$NHDT-Revision: 1.376 $ */
+/* NetHack 3.7	do.c	$NHDT-Date: 1737287889 2025/01/19 03:58:09 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.399 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Derek S. Ray, 2015. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -224,6 +224,7 @@ flooreffects(
                     }
                     if (!DEADMONSTER(mtmp) && !is_whirly(mtmp->data))
                         res = FALSE; /* still alive, boulder still intact */
+                    nhUse(res);
                 }
                 mtmp->mtrapped = 0;
             } else {