diff --git a/builder/image-ros.sh b/builder/image-ros.sh
index 1bd60339..1abd9b49 100755
--- a/builder/image-ros.sh
+++ b/builder/image-ros.sh
@@ -103,6 +103,7 @@ cd /home/pi/catkin_ws/src/clover
 NPM_CONFIG_UNSAFE_PERM=true npm install gitbook-cli -g
 NPM_CONFIG_UNSAFE_PERM=true gitbook install
 gitbook build
+rm -rf _book/assets/ && ln -s ../docs/assets/ _book/assets # replace assets with a symlink to reduce image size
 touch node_modules/CATKIN_IGNORE docs/CATKIN_IGNORE _book/CATKIN_IGNORE clover/www/CATKIN_IGNORE apps/CATKIN_IGNORE # ignore documentation files by catkin
 
 echo_stamp "Installing additional ROS packages"