diff --git a/doc-tools-check-languages.conf b/doc-tools-check-languages.conf
index d6f41e1d..30d30e04 100644
--- a/doc-tools-check-languages.conf
+++ b/doc-tools-check-languages.conf
@@ -6,16 +6,12 @@ declare -A DIRECTORIES=(
 
 # books to be built
 declare -A BOOKS=(
-    # No translations currently
-    # Example how to enable:
-    #["ja"]="ha-guide"
+    ["ja"]="ha-guide"
 )
 
 # draft books
 declare -A DRAFTS=(
-    # No translations currently
-    # Example how to enable:
-    #["ja"]="ha-guide"
+    ["ja"]="ha-guide"
 )
 
 # Where does the top-level pom live?