diff --git a/linux-core/i915_drv.c b/linux-core/i915_drv.c
index e8cd8c03..5efa4420 100644
--- a/linux-core/i915_drv.c
+++ b/linux-core/i915_drv.c
@@ -66,6 +66,9 @@ static struct drm_driver driver = {
 		.mmap = drm_mmap,
 		.poll = drm_poll,
 		.fasync = drm_fasync,
+#if defined(CONFIG_COMPAT) && LINUX_VERSION_CODE > KERNEL_VERSION(2,6,9)
+		.compat_ioctl = i915_compat_ioctl,
+#endif
 		},
 	.pci_driver = {
 		.name = DRIVER_NAME,
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h
index 600deabc..7bd13219 100644
--- a/shared-core/i915_drv.h
+++ b/shared-core/i915_drv.h
@@ -105,6 +105,8 @@ extern int i915_driver_load(struct drm_device *, unsigned long flags);
 extern void i915_driver_lastclose(drm_device_t * dev);
 extern void i915_driver_preclose(drm_device_t * dev, DRMFILE filp);
 extern int i915_driver_device_is_agp(drm_device_t * dev);
+extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
+			      unsigned long arg);
 
 /* i915_irq.c */
 extern int i915_irq_emit(DRM_IOCTL_ARGS);