diff --git a/ripngd/ripng_interface.c b/ripngd/ripng_interface.c
index 126829f..eb9005c 100644
--- a/ripngd/ripng_interface.c
+++ b/ripngd/ripng_interface.c
@@ -604,7 +604,7 @@
       return -1;
     }
   else
-    node->info = "enabled";
+    node->info = (char *) "enabled";
 
   /* XXX: One should find a better solution than a generic one */
   ripng_enable_apply_all();
@@ -638,7 +638,7 @@
 int
 ripng_enable_if_lookup (char *ifname)
 {
-  int i;
+  unsigned int i;
   char *str;
 
   for (i = 0; i < vector_max (ripng_enable_if); i++)
@@ -836,7 +836,7 @@
 void
 ripng_clean_network ()
 {
-  int i;
+  unsigned int i;
   char *str;
   struct route_node *rn;
 
@@ -862,7 +862,7 @@
 int
 ripng_passive_interface_lookup (char *ifname)
 {
-  int i;
+  unsigned int i;
   char *str;
 
   for (i = 0; i < vector_max (Vripng_passive_interface); i++)
@@ -937,7 +937,7 @@
 void
 ripng_passive_interface_clean (void)
 {
-  int i;
+  unsigned int i;
   char *str;
 
   for (i = 0; i < vector_max (Vripng_passive_interface); i++)
@@ -953,7 +953,7 @@
 int
 ripng_network_write (struct vty *vty, int config_mode)
 {
-  int i;
+  unsigned int i;
   char *ifname;
   struct route_node *node;
   char buf[BUFSIZ];