diff --git a/src/vim.h b/src/vim.h
index b8de4ae..7fea749 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -274,15 +274,6 @@
 # include "os_unix.h"	    /* bring lots of system header files */
 #endif
 
-#ifndef __ARGS
-# define __ARGS(x) x
-#endif
-
-/* __ARGS and __PARMS are the same thing. */
-#ifndef __PARMS
-# define __PARMS(x) __ARGS(x)
-#endif
-
 /* Mark unused function arguments with UNUSED, so that gcc -Wunused-parameter
  * can be used to check for mistakes. */
 #ifdef HAVE_ATTRIBUTE_UNUSED
@@ -1641,7 +1632,7 @@
  * Include a prototype for mch_memmove(), it may not be in alloc.pro.
  */
 #ifdef VIM_MEMMOVE
-void mch_memmove __ARGS((void *, void *, size_t));
+void mch_memmove(void *, void *, size_t);
 #else
 # ifndef mch_memmove
 #  define mch_memmove(to, from, len) memmove(to, from, len)
@@ -1660,7 +1651,7 @@
 #ifdef HAVE_MEMSET
 # define vim_memset(ptr, c, size)   memset((ptr), (c), (size))
 #else
-void *vim_memset __ARGS((void *, int, size_t));
+void *vim_memset(void *, int, size_t);
 #endif
 
 #ifdef HAVE_MEMCMP
@@ -1669,7 +1660,7 @@
 # ifdef HAVE_BCMP
 #  define vim_memcmp(p1, p2, len)   bcmp((p1), (p2), (len))
 # else
-int vim_memcmp __ARGS((void *, void *, size_t));
+int vim_memcmp(void *, void *, size_t);
 #  define VIM_MEMCMP
 # endif
 #endif