diff --git a/glib/ChangeLog b/glib/ChangeLog
index df0ae96dac..ce2e909028 100644
--- a/glib/ChangeLog
+++ b/glib/ChangeLog
@@ -1,3 +1,7 @@
+Sat Feb  7 11:15:54 1998  Owen Taylor  <owt1@cornell.edu>
+
+	* gutils.c: include <ctype.h> for tolower()
+
 Fri Jan 30 23:57:17 PST 1998 Manish Singh <yosh@gimp.org>
 
 	* added and autoconfigured in a new utility function
diff --git a/glib/gutils.c b/glib/gutils.c
index 6dd230d4e4..75e40e18c9 100644
--- a/glib/gutils.c
+++ b/glib/gutils.c
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <locale.h>
+#include <ctype.h>		/* For tolower() */
 #include "glib.h"