diff --git a/Makefile b/Makefile
index c1b7e81..2aa1d61 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ _DEP	=	libft.h
 DEPS	=	$(_DEP:%.h=$(IDIR)/%.h)
 
 CFLAGS	=	-I$(IDIR)
-CFLAGS +=	-Wall -Wextra -Werror -g3
+CFLAGS +=	-Wall -Wextra -Werror -g
 
 SRCS	=	ft_memset.c \
 			ft_bzero.c \
diff --git a/srcs/ft_sqrt.c b/srcs/ft_sqrt.c
index 2cf8fe6..83096f9 100644
--- a/srcs/ft_sqrt.c
+++ b/srcs/ft_sqrt.c
@@ -18,11 +18,11 @@ double ft_sqrt(double x, double precision)
 	{
 		prev_guess = guess;
 		guess = (guess + x / guess) / 2.0;
-	} while (prev_guess - guess > precision);
+	} while (ft_fabs(prev_guess - guess) > precision);
 	return guess;
 
 	// // binary search
-	// double low = 0
+	// double low = 0;
 	// double high = x;
 	// double mid;
 	// while (high - low > precision)