diff --git a/projects/rccl/custom.properties b/projects/rccl/custom.properties
new file mode 100644
index 0000000000..45e5972fc3
--- /dev/null
+++ b/projects/rccl/custom.properties
@@ -0,0 +1,3 @@
+booktitle=RCCL API Guide
+spreadsheet.xml=docs/classification-map.xml
+document.locale=enus
\ No newline at end of file