diff --git a/src/dhcp-common.c b/src/dhcp-common.c
index 7b37daf..7618452 100644
--- a/src/dhcp-common.c
+++ b/src/dhcp-common.c
@@ -627,6 +627,8 @@ int lookup_dhcp_opt(int prot, char *name)
   const struct opttab_t *t;
   int i;
 
+  (void)prot;
+
 #ifdef HAVE_DHCP6
   if (prot == AF_INET6)
     t = opttab6;
@@ -646,6 +648,8 @@ int lookup_dhcp_len(int prot, int val)
   const struct opttab_t *t;
   int i;
 
+  (void)prot;
+
 #ifdef HAVE_DHCP6
   if (prot == AF_INET6)
     t = opttab6;
diff --git a/src/dhcp6.c b/src/dhcp6.c
index 146e693..cc95937 100644
--- a/src/dhcp6.c
+++ b/src/dhcp6.c
@@ -552,6 +552,7 @@ static int make_duid1(int index, unsigned int type, char *mac, size_t maclen, vo
   
   unsigned char *p;
   (void)index;
+  (void)parm;
 
   if (type >= 256)
     return 1;
diff --git a/src/dnsmasq.c b/src/dnsmasq.c
index 8dcb1d4..f1c9500 100644
--- a/src/dnsmasq.c
+++ b/src/dnsmasq.c
@@ -51,8 +51,10 @@ int main (int argc, char **argv)
   cap_user_header_t hdr = NULL;
   cap_user_data_t data = NULL;
 #endif 
+#if defined(HAVE_DHCP) || defined(HAVE_DHCP6)
   struct dhcp_context *context;
   struct dhcp_relay *relay;
+#endif
 
 #ifdef LOCALEDIR
   setlocale(LC_ALL, "");
@@ -1231,6 +1233,8 @@ void poll_resolv(int force, int do_reload, time_t now)
 
 void clear_cache_and_reload(time_t now)
 {
+  (void)now;
+
   if (daemon->port != 0)
     cache_reload();
   
diff --git a/src/lease.c b/src/lease.c
index 02ca094..4b4d10a 100644
--- a/src/lease.c
+++ b/src/lease.c
@@ -788,6 +788,7 @@ void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr,
 #endif
 
   (void)force;
+  (void)now;
 
   if (hw_len != lease->hwaddr_len ||
       hw_type != lease->hwaddr_type || 
@@ -956,6 +957,8 @@ void lease_set_hostname(struct dhcp_lease *lease, char *name, int auth, char *do
 
 void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now)
 {
+  (void)now;
+
   if (lease->last_interface == interface)
     return;
 
@@ -984,6 +987,8 @@ int do_script_run(time_t now)
 {
   struct dhcp_lease *lease;
 
+  (void)now;
+
 #ifdef HAVE_DBUS
   /* If we're going to be sending DBus signals, but the connection is not yet up,
      delay everything until it is. */
diff --git a/src/netlink.c b/src/netlink.c
index 2bcaf01..d093988 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -402,6 +402,8 @@ static int nl_async(struct nlmsghdr *h)
   	
 static void nl_newaddress(time_t now)
 {
+  (void)now;
+
   if (option_bool(OPT_CLEVERBIND) || daemon->doing_dhcp6 || daemon->relay6 || daemon->doing_ra)
     enumerate_interfaces(0);
   
diff --git a/src/network.c b/src/network.c
index 576a7cf..fc0346e 100644
--- a/src/network.c
+++ b/src/network.c
@@ -709,6 +709,8 @@ static struct listener *create_listeners(union mysockaddr *addr, int do_tftp, in
   struct listener *l = NULL;
   int fd = -1, tcpfd = -1, tftpfd = -1;
 
+  (void)do_tftp;
+
   if (daemon->port != 0)
     {
       fd = make_sock(addr, SOCK_DGRAM, dienow);
diff --git a/src/rfc3315.c b/src/rfc3315.c
index adca102..9618ffc 100644
--- a/src/rfc3315.c
+++ b/src/rfc3315.c
@@ -1711,7 +1711,11 @@ static void calculate_times(struct dhcp_context *context, unsigned int *min_time
 static void update_leases(struct state *state, struct dhcp_context *context, struct in6_addr *addr, unsigned int lease_time, time_t now)
 {
   struct dhcp_lease *lease = lease6_find_by_addr(addr, 128, 0);
+#ifdef HAVE_SCRIPT
   struct dhcp_netid *tagif = run_tag_if(state->tags);
+#endif
+
+  (void)context;
 
   if (!lease)
     lease = lease6_allocate(addr, state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA);