diff --git a/ft_isalpha.c b/ft_isalpha.c
index 111bdc2..0133c88 100644
--- a/ft_isalpha.c
+++ b/ft_isalpha.c
@@ -1,6 +1,6 @@
 #include "libft.h"
 
-int	ft_isalpha(const char c)
+int	ft_isalpha(int c)
 {
 	return ((c >= 'a' && c <= 'z')
 		|| (c >= 'A' && c <= 'Z'));