diff --git a/include/drm/tegra_drm.h b/include/drm/tegra_drm.h
index 8dae8f33..7c0fe0ed 100644
--- a/include/drm/tegra_drm.h
+++ b/include/drm/tegra_drm.h
@@ -36,7 +36,8 @@ struct drm_tegra_gem_create {
 
 struct drm_tegra_gem_mmap {
 	__u32 handle;
-	__u32 offset;
+	__u32 pad;
+	__u64 offset;
 };
 
 struct drm_tegra_syncpt_read {