diff --git a/include/nuttx/net.h b/include/nuttx/net.h
index 62dfa2bd8be..c04d12069b6 100644
--- a/include/nuttx/net.h
+++ b/include/nuttx/net.h
@@ -111,10 +111,6 @@ struct socketlist
 };
 #endif
 
-/* This defines a bitmap big enough for one bit for each socket option */
-
-typedef uint16_t sockopt_t;
-
 /* Callback from netdev_foreach() */
 
 struct uip_driver_s; /* Forward reference.  See net/uip/uip-arch.h */
diff --git a/include/termios.h b/include/termios.h
index 9e87e72a800..25ce61b4013 100644
--- a/include/termios.h
+++ b/include/termios.h
@@ -198,11 +198,11 @@ typedef int      cc_t;      /* Used for terminal special characters */
 
 struct termios
 {
-  tcflag_t  c_iflag         /* Input modes */
-  tcflag_t  c_oflag         /* Output modes */
-  tcflag_t  c_cflag         /* Control modes */
-  tcflag_t  c_lflag         /* Local modes */
-  cc_t      c_cc[NCCS]      /* Control chars */
+  tcflag_t  c_iflag;        /* Input modes */
+  tcflag_t  c_oflag;        /* Output modes */
+  tcflag_t  c_cflag;        /* Control modes */
+  tcflag_t  c_lflag;        /* Local modes */
+  cc_t      c_cc[NCCS];     /* Control chars */
 };
 
 /****************************************************************************
diff --git a/net/netdev_unregister.c b/net/netdev_unregister.c
index 76be54b9a16..e5c2f3ce5bc 100644
--- a/net/netdev_unregister.c
+++ b/net/netdev_unregister.c
@@ -72,8 +72,6 @@
  * Private Data
  ****************************************************************************/
 
-static int g_next_devnum = 0;
-
 /****************************************************************************
  * Public Data
  ****************************************************************************/