diff --git a/dbus/dbus-sysdeps-unix.h b/dbus/dbus-sysdeps-unix.h
index 279cae27..8d3df2d6 100644
--- a/dbus/dbus-sysdeps-unix.h
+++ b/dbus/dbus-sysdeps-unix.h
@@ -165,6 +165,12 @@ DBUS_PRIVATE_EXPORT
 dbus_bool_t _dbus_ensure_standard_fds (DBusEnsureStandardFdsFlags   flags,
                                        const char                 **error_str_p);
 
+/** A UNIX signal handler */
+typedef void (* DBusSignalHandler) (int sig);
+
+void _dbus_set_signal_handler (int               sig,
+                               DBusSignalHandler handler);
+
 /** @} */
 
 DBUS_END_DECLS
diff --git a/dbus/dbus-sysdeps-util-win.c b/dbus/dbus-sysdeps-util-win.c
index 05bd976d..1ef4ae6c 100644
--- a/dbus/dbus-sysdeps-util-win.c
+++ b/dbus/dbus-sysdeps-util-win.c
@@ -296,18 +296,6 @@ _dbus_rlimit_free (DBusRLimit *lim)
   _dbus_assert (lim == NULL);
 }
 
-/** Installs a signal handler
- *
- * @param sig the signal to handle
- * @param handler the handler
- */
-void
-_dbus_set_signal_handler (int               sig,
-                          DBusSignalHandler handler)
-{
-  _dbus_verbose ("has to be implemented\n");
-}
-
 /**
  * stat() wrapper.
  *
diff --git a/dbus/dbus-sysdeps.h b/dbus/dbus-sysdeps.h
index e204fca5..6892247f 100644
--- a/dbus/dbus-sysdeps.h
+++ b/dbus/dbus-sysdeps.h
@@ -541,12 +541,6 @@ dbus_bool_t _dbus_command_for_pid (unsigned long  pid,
                                    int            max_len,
                                    DBusError     *error);
 
-/** A UNIX signal handler */
-typedef void (* DBusSignalHandler) (int sig);
-
-void _dbus_set_signal_handler (int               sig,
-                               DBusSignalHandler handler);
-
 dbus_bool_t _dbus_user_at_console (const char *username,
                                    DBusError  *error);