Nucleus

diff --git a/lib/string.c b/lib/string.c
index 945ffa5..3c9be0a 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -2,7 +2,7 @@
 
 /* Compare two strings */
 int
-strcmp(char *s1, char *s2)
+strcmp(const char *s1, const char *s2)
 {
 	for (; *s1 == *s2 && *s1 && *s2; s1++, s2++);
 	return *(unsigned char *) s1 - *(unsigned char *) s2;
@@ -10,7 +10,7 @@ strcmp(char *s1, char *s2)
 
 /* Compare two limited strings */
 int
-strncmp(char *s1, char *s2, size_t n)
+strncmp(const char *s1, const char *s2, size_t n)
 {
 	if (!n--) return 0;
 	for (; *s1 == *s2 && *s1 && *s2 && n; s1++, s2++, n--);