diff --git a/include/wlr/render/dmabuf.h b/include/wlr/render/dmabuf.h
index b9c54896..75892d30 100644
--- a/include/wlr/render/dmabuf.h
+++ b/include/wlr/render/dmabuf.h
@@ -40,6 +40,6 @@ void wlr_dmabuf_attributes_finish(struct wlr_dmabuf_attributes *attribs);
  * Clones the DMA-BUF attributes.
  */
 bool wlr_dmabuf_attributes_copy(struct wlr_dmabuf_attributes *dst,
-	struct wlr_dmabuf_attributes *src);
+	const struct wlr_dmabuf_attributes *src);
 
 #endif
diff --git a/render/dmabuf.c b/render/dmabuf.c
index 1940b66e..3c431159 100644
--- a/render/dmabuf.c
+++ b/render/dmabuf.c
@@ -13,7 +13,7 @@ void wlr_dmabuf_attributes_finish(struct wlr_dmabuf_attributes *attribs) {
 }
 
 bool wlr_dmabuf_attributes_copy(struct wlr_dmabuf_attributes *dst,
-		struct wlr_dmabuf_attributes *src) {
+		const struct wlr_dmabuf_attributes *src) {
 	memcpy(dst, src, sizeof(struct wlr_dmabuf_attributes));
 
 	int i;