diff --git a/bit_manipulation/count_of_set_bits.cpp b/bit_manipulation/count_of_set_bits.cpp
index 9c6d888f1..6e4dfaa2f 100644
--- a/bit_manipulation/count_of_set_bits.cpp
+++ b/bit_manipulation/count_of_set_bits.cpp
@@ -64,6 +64,6 @@ static void test() {
  * @returns 0 on exit
  */
 int main() {
-    test();  // execute the test
+    test();  // run self-test implementations
     return 0;
 }