diff --git a/data_structures/dsu_union_rank.cpp b/data_structures/dsu_union_rank.cpp
index c0bd3daa8..a1550f9b4 100644
--- a/data_structures/dsu_union_rank.cpp
+++ b/data_structures/dsu_union_rank.cpp
@@ -17,8 +17,8 @@
  * @see dsu_path_compression.cpp
  */
 
-#include <iostream> ///for io
-#include <vector> ///for using vectors
+#include <iostream> /// for IO operations
+#include <vector>  /// for std::vector
 
 
 using std::cout;