diff --git a/src/ChangeLog b/src/ChangeLog
index a97d314f674..a1a56209a05 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,12 @@
 2000-09-21  Gerd Moellmann  <gerd@gnu.org>
 
+	* window.c, term.c, xmenu.c, xrdb.c, emacs.c, macros.c,
+	* keymap.c, insdel.c, marker.c, minibuf.c, fileio.c, dired.c,
+	* indent.c, search.c, alloc.c, data.c: Avoid some more compiler
+	warnings.
+	
+	* marker.c (byte_char_debug_check): Return void.
+
 	* xfns.c (Fx_create_frame): Set default frame parameter value
 	for tool-bar-lines to 1.
 
diff --git a/src/marker.c b/src/marker.c
index 5b01738cf9d..b3f9e0b4b84 100644
--- a/src/marker.c
+++ b/src/marker.c
@@ -32,6 +32,8 @@ static int cached_bytepos;
 static struct buffer *cached_buffer;
 static int cached_modiff;
 
+static void byte_char_debug_check P_ ((struct buffer *, int, int));
+
 /* Nonzero means enable debugging checks on byte/char correspondences.  */
 
 static int byte_debug_flag;
@@ -97,7 +99,7 @@ clear_charpos_cache (b)
     }									\
 }
 
-int
+static void
 byte_char_debug_check (b, charpos, bytepos)
      struct buffer *b;
      int charpos, bytepos;