diff --git a/package/x11r7/xserver_xorg-server/xserver_xorg-server.mk b/package/x11r7/xserver_xorg-server/xserver_xorg-server.mk
index f118ef2071..f8037b46f5 100644
--- a/package/x11r7/xserver_xorg-server/xserver_xorg-server.mk
+++ b/package/x11r7/xserver_xorg-server/xserver_xorg-server.mk
@@ -144,7 +144,9 @@ ifeq ($(BR2_PACKAGE_FREETYPE),y)
 XSERVER_XORG_SERVER_DEPENDENCIES += freetype
 endif
 
-ifeq ($(BR2_PACKAGE_LIBUNWIND),y)
+# libunwind support is broken on mips64
+# https://bugs.freedesktop.org/show_bug.cgi?id=79939
+ifeq ($(BR2_PACKAGE_LIBUNWIND)-$(BR2_mips64el),y-)
 XSERVER_XORG_SERVER_DEPENDENCIES += libunwind
 else
 XSERVER_XORG_SERVER_CONF_OPTS += --disable-libunwind