diff --git a/docs/Makefile.local b/docs/Makefile.local
index 352ffd352651af5bb929bc5b2c081e77cb42c401..fbd18f25c39c2079906b2f347b56eb3cda797e0f 100644
--- a/docs/Makefile.local
+++ b/docs/Makefile.local
@@ -1,5 +1,6 @@
 sphinx/html: images
 sphinx/clean: clean-images
+assets: images
 
 images:
 	make -C images/