diff --git a/glib/ChangeLog b/glib/ChangeLog
index 0fbd67d8a8..800005fbe8 100644
--- a/glib/ChangeLog
+++ b/glib/ChangeLog
@@ -1,3 +1,7 @@
+Mon May 18 22:14:39 1998  Owen Taylor  <otaylor@gtk.org>
+
+	* gutils.c: Restored a missing prototype for g_vsprintf.
+
 Tue May 12 19:22:58 1998  Owen Taylor  <otaylor@gtk.org>
 
  	* glib/glib.h: Added macros G[U]INT_TO_POINTER() and
diff --git a/glib/gutils.c b/glib/gutils.c
index c20f075660..921555e01f 100644
--- a/glib/gutils.c
+++ b/glib/gutils.c
@@ -24,6 +24,7 @@
 #include <ctype.h>		/* For tolower() */
 #include "glib.h"
 
+extern char* g_vsprintf (const gchar *fmt, va_list *args, va_list *args2);
 
 gchar*
 g_strdup (const gchar *str)