diff --git a/linux-core/Makefile.kernel b/linux-core/Makefile.kernel
index 36cd2e3d..e97470fb 100644
--- a/linux-core/Makefile.kernel
+++ b/linux-core/Makefile.kernel
@@ -26,6 +26,11 @@ via-objs    := via_irq.o via_drv.o via_ds.o via_map.o via_mm.o via_dma.o via_ver
 		via_video.o
 mach64-objs := mach64_drv.o mach64_dma.o mach64_irq.o mach64_state.o 
 
+ifeq ($(CONFIG_COMPAT),y)
+drm-objs    += drm_ioc32.o
+radeon-objs += radeon_ioc32.o
+endif
+
 obj-m			+= drm.o
 obj-$(CONFIG_DRM_TDFX)	+= tdfx.o
 obj-$(CONFIG_DRM_R128)	+= r128.o