diff --git a/include/extern.h b/include/extern.h
index 7da52c591..a5d0f24e4 100644
--- a/include/extern.h
+++ b/include/extern.h
@@ -428,7 +428,6 @@ extern void end_of_input(void);
 #endif
 extern char readchar(void);
 extern char readchar_poskey(coordxy *, coordxy *, int *);
-extern void sanity_check(void);
 extern char* key2txt(uchar, char *);
 extern char yn_function(const char *, const char *, char, boolean);
 extern char paranoid_ynq(boolean, const char *, boolean);
@@ -3743,6 +3742,7 @@ extern void wizcustom_callback(winid win, int glyphnum, char *id);
 extern int wiz_display_macros(void);
 extern int wiz_mon_diff(void);
 #endif
+extern void sanity_check(void);
 
 /* ### worm.c ### */
 
diff --git a/include/hack.h b/include/hack.h
index b385fc37f..81f97632b 100644
--- a/include/hack.h
+++ b/include/hack.h
@@ -783,6 +783,7 @@ struct sinfo {
     int in_parseoptions;        /* in parseoptions */
     int in_role_selection;      /* role/race/&c selection menus in progress */
     int in_getlin;              /* inside interface getlin routine */
+    int in_sanity_check;        /* for impossible() during sanity checking */
     int config_error_ready;     /* config_error_add is ready, available */
     int beyond_savefile_load;   /* set when past savefile loading */
 #ifdef PANICLOG
diff --git a/src/pline.c b/src/pline.c
index 811d5a2fe..7e22c1a85 100644
--- a/src/pline.c
+++ b/src/pline.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	pline.c	$NHDT-Date: 1693083243 2023/08/26 20:54:03 $  $NHDT-Branch: keni-crashweb2 $:$NHDT-Revision: 1.124 $ */
+/* NetHack 3.7	pline.c	$NHDT-Date: 1719819280 2024/07/01 07:34:40 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.130 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Robert Patrick Rankin, 2018. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -594,6 +594,12 @@ impossible(const char *s, ...)
     pline("%s", pbuf);
     gp.pline_flags = 0;
 
+    if (gp.program_state.in_sanity_check) {
+        /* skip rest of multi-line feedback */
+        gp.program_state.in_impossible = 0;
+        return;
+    }
+
     Strcpy(pbuf2, "Program in disorder!");
     if (gp.program_state.something_worth_saving)
         Strcat(pbuf2, "  (Saving and reloading may fix this problem.)");
@@ -608,7 +614,7 @@ impossible(const char *s, ...)
         boolean report = ('y' == yn_function("Report now?", ynchars,
                                              'n', FALSE));
 
-        raw_print("");  // prove to the user the character was accepted
+        raw_print(""); /* prove to the user the character was accepted */
         if (report) {
             submit_web_report(1, "Impossible", pbuf);
         }
diff --git a/src/wizcmds.c b/src/wizcmds.c
index f4f3006f2..6d1585ce9 100644
--- a/src/wizcmds.c
+++ b/src/wizcmds.c
@@ -1435,6 +1435,7 @@ sanity_check(void)
         iflags.sanity_no_check = FALSE;
         return;
     }
+    gp.program_state.in_sanity_check++;
     you_sanity_check();
     obj_sanity_check();
     timer_sanity_check();
@@ -1443,6 +1444,7 @@ sanity_check(void)
     bc_sanity_check();
     trap_sanity_check();
     engraving_sanity_check();
+    gp.program_state.in_sanity_check--;
 }
 
 /* qsort() comparison routine for use in list_migrating_mons() */