diff --git a/include/tradstdc.h b/include/tradstdc.h
index 13302c604..bff09c3a7 100644
--- a/include/tradstdc.h
+++ b/include/tradstdc.h
@@ -1,4 +1,4 @@
-/* NetHack 3.7	tradstdc.h	$NHDT-Date: 1596498565 2020/08/03 23:49:25 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.37 $ */
+/* NetHack 3.7	tradstdc.h	$NHDT-Date: 1685522034 2023/05/31 08:33:54 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.54 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Robert Patrick Rankin, 2006. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -172,77 +172,8 @@ typedef const char *vA;
 
 #endif /* NEED_VARARGS */
 
-#if defined(NHSTDC) || defined(MSDOS) || defined(MAC) \
-    || defined(ULTRIX_PROTO) || defined(__BEOS__)
-
-/*
- * Used for robust ANSI parameter forward declarations:
- * int VDECL(sprintf, (char *, const char *, ...));
- *
- * VDECL() is used for functions with a variable number of arguments.
- * Separate macros are needed because ANSI will mix old-style declarations
- * with prototypes, except in the case of varargs
-  */
-
-#if defined(MSDOS) || defined(USE_STDARG)
-#define VDECL(f, p) f p
-#else
-#define VDECL(f, p) f()
-#endif
-
 /* generic pointer, always a macro; genericptr_t is usually a typedef */
 #define genericptr void *
-
-#if (defined(ULTRIX_PROTO) && !defined(__GNUC__)) || defined(OS2_CSET2)
-/* Cover for Ultrix on a DECstation with 2.0 compiler, which coredumps on
- *   typedef void * genericptr_t;
- *   extern void a(void(*)(int, genericptr_t));
- * Using the #define is OK for other compiler versions too.
- */
-/* And IBM CSet/2.  The redeclaration of free hoses the compile. */
-#define genericptr_t genericptr
-#else
-#if !defined(NHSTDC) && !defined(MAC)
-#define const
-#define signed
-#define volatile
-#endif
-#endif
-
-/*
- * Suppress `const' if necessary and not handled elsewhere.
- * Don't use `#if defined(xxx) && !defined(const)'
- * because some compilers choke on `defined(const)'.
- * This has been observed with Lattice, MPW, and High C.
- */
-#if (defined(ULTRIX_PROTO) && !defined(NHSTDC)) || defined(apollo)
-/* the system header files don't use `const' properly */
-#ifndef const
-#define const
-#endif
-#endif
-
-#else /* NHSTDC */ /* a "traditional" C  compiler */
-
-#define VDECL(f, p) f()
-
-#if defined(AMIGA) || defined(HPUX) || defined(POSIX_TYPES) \
-    || defined(__DECC) || defined(__BORLANDC__)
-#define genericptr void *
-#endif
-#ifndef genericptr
-#define genericptr char *
-#endif
-
-/*
- * Traditional C compilers don't have "signed", "const", or "volatile".
- */
-#define signed
-#define const
-#define volatile
-
-#endif /* NHSTDC */
-
 #ifndef genericptr_t
 typedef genericptr genericptr_t; /* (void *) or (char *) */
 #endif
diff --git a/sys/vms/vmsfiles.c b/sys/vms/vmsfiles.c
index e2ae8d657..0ce34f834 100644
--- a/sys/vms/vmsfiles.c
+++ b/sys/vms/vmsfiles.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	vmsfiles.c	$NHDT-Date: 1596498306 2020/08/03 23:45:06 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.12 $ */
+/* NetHack 3.7	vmsfiles.c	$NHDT-Date: 1685522046 2023/05/31 08:34:06 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.19 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Robert Patrick Rankin, 2007. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -36,13 +36,13 @@ int c__translate(int);
 
 #ifndef VMSVSI
 extern unsigned long sys$parse(), sys$search(), sys$enter(), sys$remove();
-extern int VDECL(lib$match_cond, (int, int, ...));
+extern int lib$match_cond(int, int, ...);
 #endif
 
 #define vms_success(sts) ((sts) & 1)         /* odd, */
 #define vms_failure(sts) (!vms_success(sts)) /* even */
 
-/* vms_link() -- create an additional directory for an existing file */
+/* vms_link() -- create an additional directory entry for an existing file */
 int
 vms_link(const char *file, const char *new)
 {
diff --git a/sys/vms/vmsmail.c b/sys/vms/vmsmail.c
index 15e31405e..4430a7dbc 100644
--- a/sys/vms/vmsmail.c
+++ b/sys/vms/vmsmail.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	vmsmail.c	$NHDT-Date: 1596498307 2020/08/03 23:45:07 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.11 $ */
+/* NetHack 3.7	vmsmail.c	$NHDT-Date: 1685522048 2023/05/31 08:34:08 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.18 $ */
 /* Copyright (c) Robert Patrick Rankin, 1991.                     */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -43,7 +43,7 @@ extern int strncmpi(const char *, const char *, int);
 
 extern size_t strspn(const char *, const char *);
 #ifndef __DECC
-extern int VDECL(sscanf, (const char *, const char *, ...));
+extern int sscanf(const char *, const char *, ...);
 #endif
 
 #ifdef VMSVSI
diff --git a/sys/vms/vmsmisc.c b/sys/vms/vmsmisc.c
index 3cd8c3d24..2c1226174 100644
--- a/sys/vms/vmsmisc.c
+++ b/sys/vms/vmsmisc.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	vmsmisc.c	$NHDT-Date: 1596498308 2020/08/03 23:45:08 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.12 $ */
+/* NetHack 3.7	vmsmisc.c	$NHDT-Date: 1685522049 2023/05/31 08:34:09 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.18 $ */
 /*      Copyright (c) 2011 by Robert Patrick Rankin              */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -22,7 +22,7 @@ ATTRNORETURN void vms_abort(void);
 /* first arg should be unsigned long but <lib$routines.h> has unsigned int */
 
 #ifndef VMSVSI
-extern void VDECL(lib$signal, (unsigned, ...));
+extern void lib$signal(unsigned, ...);
 #endif
 
 /* terminate, converting Unix-style exit code into VMS status code */
diff --git a/sys/vms/vmsunix.c b/sys/vms/vmsunix.c
index 0bcdae7b2..6aac1979e 100644
--- a/sys/vms/vmsunix.c
+++ b/sys/vms/vmsunix.c
@@ -1,4 +1,4 @@
-/* NetHack 3.7	vmsunix.c	$NHDT-Date: 1605493693 2020/11/16 02:28:13 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.24 $ */
+/* NetHack 3.7	vmsunix.c	$NHDT-Date: 1685522050 2023/05/31 08:34:10 $  $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.31 $ */
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /*-Copyright (c) Robert Patrick Rankin, 2011. */
 /* NetHack may be freely redistributed.  See license for details. */
@@ -34,7 +34,7 @@
 extern int debuggable; /* defined in vmsmisc.c */
 
 #ifndef VMSVSI
-extern void VDECL(lib$signal, (unsigned, ...));
+extern void lib$signal(unsigned, ...);
 extern unsigned long sys$setprv();
 extern unsigned long lib$getdvi(), lib$getjpi(), lib$spawn(), lib$attach();
 extern unsigned long smg$init_term_table_by_type(), smg$del_term_table();