diff --git a/ChangeLog b/ChangeLog
index 06ab344f..aa22092e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 1999-07-29  Martin Baulig  <martin@home-of-linux.org>
 
+	* include/glibtop/error.h: Use G_GNUC_UNUSED.
+
 	* configure.in (ENABLE_STATIC, ENABLE_SHARED): New automake
 	conditionals.
 
diff --git a/include/glibtop/error.h b/include/glibtop/error.h
index 2b7c835b..a168aee9 100644
--- a/include/glibtop/error.h
+++ b/include/glibtop/error.h
@@ -30,13 +30,22 @@
 
 BEGIN_LIBGTOP_DECLS
 
+#ifndef G_GNUC_UNUSED
+#if	__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)
+#define G_GNUC_UNUSED				\
+  __attribute__((unused))
+#else	/* !__GNUC__ */
+#define	G_GNUC_UNUSED
+#endif	/* !__GNUC__ */
+#endif /* defined G_GNUC_UNUSED */
+
 void glibtop_error_vr (glibtop *server, char *format, va_list args);
 void glibtop_warn_vr (glibtop *server, char *format, va_list args);
 
 void glibtop_error_io_vr (glibtop *server, char *format, int, va_list args);
 void glibtop_warn_io_vr (glibtop *server, char *format, int, va_list args);
 
-static void
+static void G_GNUC_UNUSED
 glibtop_error_r (glibtop *server, char *format, ...)
 {
     va_list args;
@@ -46,7 +55,7 @@ glibtop_error_r (glibtop *server, char *format, ...)
     va_end (args);
 }
 
-static void
+static void G_GNUC_UNUSED
 glibtop_warn_r (glibtop *server, char *format, ...)
 {
     va_list args;
@@ -56,7 +65,7 @@ glibtop_warn_r (glibtop *server, char *format, ...)
     va_end (args);
 }
 
-static void
+static void G_GNUC_UNUSED
 glibtop_error_io_r (glibtop *server, char *format, ...)
 {
     va_list args;
@@ -66,7 +75,7 @@ glibtop_error_io_r (glibtop *server, char *format, ...)
     va_end (args);
 }
 
-static void
+static void G_GNUC_UNUSED
 glibtop_warn_io_r (glibtop *server, char *format, ...)
 {
     va_list args;