diff --git a/libftasm/src/sstr/ft_sstradd.c b/libftasm/src/sstr/ft_sstradd.c
index e01e4f61..fef02c2b 100644
--- a/libftasm/src/sstr/ft_sstradd.c
+++ b/libftasm/src/sstr/ft_sstradd.c
@@ -27,8 +27,8 @@ char	**ft_sstradd(char **sstr, char *new)
 		return (NULL);
 	if (sstr)
 		ft_memcpy(newlist, sstr, sizeof(char*) * size);
-	newlist[size++] = ft_strdup(new);
-	newlist[size] = NULL;
+	newlist[size] = ft_strdup(new);
+	newlist[size + 1] = NULL;
 	free(sstr);
 	return (newlist);
 }
diff --git a/libftasm/src/str/ft_strcmp.c b/libftasm/src/str/ft_strcmp.c
index 641bc5b8..6349ac8c 100644
--- a/libftasm/src/str/ft_strcmp.c
+++ b/libftasm/src/str/ft_strcmp.c
@@ -17,6 +17,8 @@ int		ft_strcmp(const char *s1, const char *s2)
 	int	i;
 
 	i = 0;
+	if (!s1 || !s2)
+		return (1);
 	while (*(s1 + i) && *(s1 + i) == *(s2 + i))
 		i++;
 	return (*((unsigned char*)s1 + i) - *((unsigned char*)s2 + i));