diff --git a/roles/fai/templates/etc/fai/nfsroot.conf.j2 b/roles/fai/templates/etc/fai/nfsroot.conf.j2
index 96b658d..aeed307 100644
--- a/roles/fai/templates/etc/fai/nfsroot.conf.j2
+++ b/roles/fai/templates/etc/fai/nfsroot.conf.j2
@@ -7,7 +7,7 @@
 # Example:
 # FAI_DEBOOTSTRAP="bullseye http://deb.debian.org/debian"
 FAI_DEBOOTSTRAP="{{ debian_release_nfsroot +
-	'http://' + server_name + ':3142/debian' }}"
+	' http://' + server_name + ':3142/debian' }}"
 
 # Options that will be passed to debootstrap(8).
 # Used for excluding packages and for specifying a different architecture.