diff --git a/numbers.c b/numbers.c
index a4afc9e..393a9d2 100644
--- a/numbers.c
+++ b/numbers.c
@@ -39,7 +39,7 @@ unsigned int *createNumbers(unsigned int len)
   for (int i = 1; i < len; i++)
   {
     number = rand() % (2 * len) + 1;
-    numbers = (numbers, &number, sizeof(int), compareFct, &isDuplicate);
+    numbers = addToTree(numbers, &number, sizeof(int), compareFct, &isDuplicate);
     if (isDuplicate == 1)
     {
       isDuplicate = 0;
@@ -85,5 +85,6 @@ unsigned int getDuplicate(const unsigned int numbers[], unsigned int len)
     }
   }
 
+  free(copyNumbers);
   return 0;
 }
\ No newline at end of file