diff --git a/backend/drm/drm.c b/backend/drm/drm.c
index 76decd758..cefc14a60 100644
--- a/backend/drm/drm.c
+++ b/backend/drm/drm.c
@@ -181,6 +181,18 @@ static bool init_color_pipeline(struct wlr_drm_backend *drm,
 		}
 
 		colorop->type = (uint32_t)type;
+
+		switch (type) {
+		case DRM_COLOROP_1D_LUT:
+		case DRM_COLOROP_3D_LUT:;
+			uint64_t size = 0;
+			if (!get_drm_prop(drm->fd, id, colorop->props.size, &size)) {
+				return false;
+			}
+			colorop->size = size;
+			break;
+		}
+
 		id = (uint32_t)next;
 	}
 
diff --git a/include/backend/drm/drm.h b/include/backend/drm/drm.h
index 05c065ced..22da263f6 100644
--- a/include/backend/drm/drm.h
+++ b/include/backend/drm/drm.h
@@ -23,6 +23,7 @@ struct wlr_drm_viewport {
 struct wlr_drm_colorop {
 	uint32_t id;
 	uint32_t type; // enum drm_colorop_type
+	uint32_t size; // for 1D_LUT, 3D_LUT
 
 	struct wlr_drm_colorop_props props;
 	struct wl_list link; // wlr_drm_plane.color_pipelines