diff --git a/math/sum_of_digits.cpp b/math/sum_of_digits.cpp
index bcb6d7956..d5a705c48 100644
--- a/math/sum_of_digits.cpp
+++ b/math/sum_of_digits.cpp
@@ -2,7 +2,7 @@
  * Copyright 2020 @author iamnambiar
  * 
  * @file
- * A C++ Program to find the Sum of Digits of input integer.
+ * \brief A C++ Program to find the Sum of Digits of input integer.
  */
 #include <iostream>
 #include <cassert>