diff --git a/numerical_methods/fast_fourier_transform.cpp b/numerical_methods/fast_fourier_transform.cpp
index 802cc9364..473cdbd2d 100644
--- a/numerical_methods/fast_fourier_transform.cpp
+++ b/numerical_methods/fast_fourier_transform.cpp
@@ -75,9 +75,15 @@ std::complex<double>* FastFourierTransform(std::complex<double>*p,uint64_t  n)
 static void test() {
     /* descriptions of the following test */
     
-    std::complex<double> t1[2]={1,2};///Test case 1
+    std::complex<double> *t1= new std::complex<double>[2];///Test case 1
+    t1[0]={1,0};
+    t1[1]={2,0};
 	
-    std::complex<double> t2[4]={1,2,3,4};///Test case 2
+    std::complex<double> *t2=new std::complex<double>[4];///Test case 2
+    t2[0]={1,0};
+    t2[1]={2,0};
+    t2[2]={3,0};
+    t2[3]={4,0};