diff --git a/foreman/start-manual.sh b/foreman/start-manual.sh
index b0ad1b8e..6d243e1b 100755
--- a/foreman/start-manual.sh
+++ b/foreman/start-manual.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-mdbook serve \
+exec mdbook serve \
   --port 63332 \
   --dest-dir ./.hydra-data/manual \
   ./doc/manual/