diff --git a/include/drm/drm_blend.h b/include/drm/drm_blend.h
index 868f0364e9395b6060c03433cbf3b1c676673f36..36baa175de9949c739a9a21e56308eb8fff07cc9 100644
--- a/include/drm/drm_blend.h
+++ b/include/drm/drm_blend.h
@@ -33,6 +33,9 @@ struct drm_atomic_state;
  * Rotation property bits. DRM_ROTATE_<degrees> rotates the image by the
  * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
  * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
+ *
+ * WARNING: These defines are UABI since they're exposed in the rotation
+ * property.
  */
 #define DRM_ROTATE_0	BIT(0)
 #define DRM_ROTATE_90	BIT(1)
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 256219bfd07b8cf65cc402822d0a588b9457c5a2..43cf193e54d666be087c5962ac82401f0db3782e 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -333,8 +333,19 @@ struct drm_plane_funcs {
  * DRM_CLIENT_CAP_UNIVERSAL_PLANES client capability bit to indicate that they
  * wish to receive a universal plane list containing all plane types. See also
  * drm_for_each_legacy_plane().
+ *
+ * WARNING: The values of this enum is UABI since they're exposed in the "type"
+ * property.
  */
 enum drm_plane_type {
+	/**
+	 * @DRM_PLANE_TYPE_OVERLAY:
+	 *
+	 * Overlay planes represent all non-primary, non-cursor planes. Some
+	 * drivers refer to these types of planes as "sprites" internally.
+	 */
+	DRM_PLANE_TYPE_OVERLAY,
+
 	/**
 	 * @DRM_PLANE_TYPE_PRIMARY:
 	 *
@@ -353,14 +364,6 @@ enum drm_plane_type {
 	 * DRM_IOCTL_MODE_CURSOR2 IOCTLs.
 	 */
 	DRM_PLANE_TYPE_CURSOR,
-
-	/**
-	 * @DRM_PLANE_TYPE_OVERLAY:
-	 *
-	 * Overlay planes represent all non-primary, non-cursor planes. Some
-	 * drivers refer to these types of planes as "sprites" internally.
-	 */
-	DRM_PLANE_TYPE_OVERLAY,
 };