diff --git a/includes/libft.h b/includes/libft.h
index 829f8e2..0d0bee4 100644
--- a/includes/libft.h
+++ b/includes/libft.h
@@ -132,7 +132,7 @@ int ft_sign(int i);
 int ft_fsign(double i);
 double ft_pow(double base, int exponent);
 double ft_round(double x);
-double ft_sqrt(double i);
+double ft_sqrt(double i, double precision);
 void ft_free_tab(char **tab);
 
 int ft_arrint(int *intarr, int comp, size_t size);
diff --git a/srcs/ft_sqrt.c b/srcs/ft_sqrt.c
index 63ec754..2cf8fe6 100644
--- a/srcs/ft_sqrt.c
+++ b/srcs/ft_sqrt.c
@@ -4,17 +4,13 @@
  * return the square root of nb
  * Newton–Raphson method : https://en.wikipedia.org/wiki/Newton%27s_method#Use_of_Newton's_method_to_compute_square_roots
  */
-double ft_sqrt(double x)
+double ft_sqrt(double x, double precision)
 {
-	double precision;
-
 	if (x < 0)
 		return -1; // handle negative numbers
 	if (x == 0)
 		return 0;
 
-	precision = 0.00001;
-
 	// Newton-Raphson
 	double guess = x;
 	double prev_guess;