diff --git a/Algorithms.hpp b/Algorithms.hpp
index 6655a1e..5b61898 100644
--- a/Algorithms.hpp
+++ b/Algorithms.hpp
@@ -54,7 +54,7 @@ bool isFound(T num, std::vector<T> list);
 std::vector<std::string> getPermutations(std::string master, int num = 0);
 //These functions return the numth Fibonacci number
 uint64_t getFib(uint64_t num);
-void getFib(mpz_t fibNum, uint64_t num);
+mpz_class getMpzFib(uint64_t num);
 //This is a function that performs a bubble sort on a vector
 template<class T>
 bool bubbleSort(std::vector<T> nums);