diff --git a/backtracking/subset_sum.cpp b/backtracking/subset_sum.cpp
index 5fe4c225d..78054b77a 100644
--- a/backtracking/subset_sum.cpp
+++ b/backtracking/subset_sum.cpp
@@ -102,6 +102,6 @@ static void test() {
  * @returns 0 on exit
  */
 int main() {
-    test();  // execute the test
+    test();  // run self-test implementations
     return 0;
 }