diff --git a/range_queries/heavy_light_decomposition.cpp b/range_queries/heavy_light_decomposition.cpp
index f232b753b..72a57f51b 100644
--- a/range_queries/heavy_light_decomposition.cpp
+++ b/range_queries/heavy_light_decomposition.cpp
@@ -52,6 +52,10 @@
  * Sample I/O at the bottom.
  */
 
+/**
+ * @namespace range_queries
+ * @brief Algorithms and Data Structures that support range queries and updates.
+*/
 namespace range_queries {
 
 /**