diff --git a/hack/libhack/challenge.sh b/hack/libhack/challenge.sh
index d756e3c..8a7e558 100644
--- a/hack/libhack/challenge.sh
+++ b/hack/libhack/challenge.sh
@@ -40,7 +40,7 @@ challenge::run() {
         if [[ -d "${BASEIMAGE_PATH}" ]]; then
             mount_baseimage="-v ${BASEIMAGE_PATH}/lib/tfw:/usr/local/lib/tfw"
         fi
-        mount_challenge="-v ${CHALLENGE_PATH}/solvable/src:/srv/.tfw"
+        mount_challenge="-v ${CHALLENGE_PATH}/solvable/src:/srv/.tfw_builtin_ehs"
         mount_volumes="${mount_baseimage:-} ${mount_challenge}"
     fi
     popd