diff --git a/cdist/conf/type/__debian_backports/manifest b/cdist/conf/type/__debian_backports/manifest
index 29bf9a43..661e5281 100755
--- a/cdist/conf/type/__debian_backports/manifest
+++ b/cdist/conf/type/__debian_backports/manifest
@@ -30,6 +30,7 @@ case "$os" in
         # distribution codename from /etc/os-release
         # lsb_release may not be given in all debian installations
         dist="$(
+            # shellcheck disable=SC1090
             . "$__global/explorer/os-release"
             printf "%s" "$VERSION_CODENAME"
         )"