diff --git a/doc-tools-check-languages.conf b/doc-tools-check-languages.conf
index 6fa763cd7..1d7591df6 100644
--- a/doc-tools-check-languages.conf
+++ b/doc-tools-check-languages.conf
@@ -20,6 +20,7 @@ declare -A DIRECTORIES=(
 declare -A BOOKS=(
     # See comment at start of file and update tox.ini as well if you
     # change anything here.
+    ["de"]="api-quick-start"
     ["id"]="api-quick-start"
     ["ja"]="api-quick-start"
     ["ko_KR"]="api-quick-start"