diff --git a/ChangeLog b/ChangeLog
index 53f0d12bc..e1b64929b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Jan  4  9:05:00 1998  Richard Frith-Macdonald <richard@brainstorm.co.uk>
+
+        * src/o_vscanf.c: Don't make local copy of va_list parameter by
+        assignment - doesn't work on machines where a va_list is an array.
+
 Sat Jan  2 12:48:51 1999  Adam Fedor  <fedor@ultra.doc.com>
 
 	* configure.in: Configure subdir src/mframe properly using
diff --git a/Source/o_vscanf.c b/Source/o_vscanf.c
index d54151154..81de354e6 100644
--- a/Source/o_vscanf.c
+++ b/Source/o_vscanf.c
@@ -92,10 +92,8 @@ int
 o_vscanf (void *stream, 
 		int (*inchar_func)(void*), 
 		void (*unchar_func)(void*,int),
-		const char *format, va_list argptr)
+		const char *format, va_list arg)
 {
-  va_list arg = (va_list) argptr;
-
   register CONST char *f = format;
   register char fc;		/* Current character of the format.  */
   register size_t done = 0;	/* Assignments done.  */