diff --git a/data_structures/reverse_a_linked_list.cpp b/data_structures/reverse_a_linked_list.cpp
index fd694e38e..26a52ed52 100644
--- a/data_structures/reverse_a_linked_list.cpp
+++ b/data_structures/reverse_a_linked_list.cpp
@@ -175,6 +175,6 @@ static void test() {
  * @returns 0 on exit
  */
 int main() {
-    test();      //run self-test implementations
+    test();  //run self-test implementations
     return 0;
 }