1 files changed, 3 insertions, 3 deletions
diff --git a/lib/ip.c b/lib/ip.c
index e1bfba49..2061a1f7 100644
--- a/lib/ip.c
+++ b/lib/ip.c
@@ -233,7 +233,7 @@ ip6_ntop(ip6_addr a, char *b)
 }
 
 int
-ip4_pton(char *a, ip4_addr *o)
+ip4_pton(const char *a, ip4_addr *o)
 {
   int i;
   unsigned long int l;
@@ -258,11 +258,11 @@ ip4_pton(char *a, ip4_addr *o)
 }
 
 int
-ip6_pton(char *a, ip6_addr *o)
+ip6_pton(const char *a, ip6_addr *o)
 {
   u16 words[8];
   int i, j, k, l, hfil;
-  char *start;
+  const char *start;
 
   if (a[0] == ':')			/* Leading :: */
   {