diff --git a/numerical_methods/fast_fourier_transform.cpp b/numerical_methods/fast_fourier_transform.cpp
index 236d5650a..b2c27e416 100644
--- a/numerical_methods/fast_fourier_transform.cpp
+++ b/numerical_methods/fast_fourier_transform.cpp
@@ -117,9 +117,6 @@ static void test() {
 
 int main(int argc, char const *argv[])
 {
-	
-	
-   test();
-    
+   test();  // run self-test implementations
    return 0;
 }