diff --git a/conf/conf.c b/conf/conf.c
index be2d7713..a744dcaa 100644
--- a/conf/conf.c
+++ b/conf/conf.c
@@ -210,7 +210,7 @@ config_do_commit(struct config *c)
 }
 
 static void
-config_done(void *unused)
+config_done(void *unused UNUSED)
 {
   struct config *c;
 
diff --git a/nest/locks.c b/nest/locks.c
index 11489b77..1cdbbc99 100644
--- a/nest/locks.c
+++ b/nest/locks.c
@@ -153,7 +153,7 @@ olock_acquire(struct object_lock *l)
 }
 
 static void
-olock_run_event(void *unused)
+olock_run_event(void *unused UNUSED)
 {
   node *n;
   struct object_lock *q;
diff --git a/nest/password.c b/nest/password.c
index 9a77e89b..594569cc 100644
--- a/nest/password.c
+++ b/nest/password.c
@@ -25,7 +25,7 @@ password_goodness(struct password_item *i)
 }
 
 struct password_item *
-get_best_password(struct password_item *head, int flags)
+get_best_password(struct password_item *head, int flags UNUSED)
 {
   int good = -1;
   struct password_item *best = NULL;
diff --git a/nest/proto.c b/nest/proto.c
index 54fb3bf8..fb24e573 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -619,7 +619,7 @@ proto_notify_state(struct proto *p, unsigned ps)
 }
 
 static void
-proto_flush_all(void *unused)
+proto_flush_all(void *unused UNUSED)
 {
   struct proto *p;
 
diff --git a/nest/rt-fib.c b/nest/rt-fib.c
index 34d862e2..8d76f26f 100644
--- a/nest/rt-fib.c
+++ b/nest/rt-fib.c
@@ -79,7 +79,7 @@ fib_hash(struct fib *f, ip_addr *a)
 }
 
 static void
-fib_dummy_init(struct fib_node *dummy)
+fib_dummy_init(struct fib_node *dummy UNUSED)
 {
 }