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Diffstat (limited to 'nuttx/net/uip/uip_lock.c')
-rw-r--r--nuttx/net/uip/uip_lock.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/nuttx/net/uip/uip_lock.c b/nuttx/net/uip/uip_lock.c
index 0e770cef7..5abcda269 100644
--- a/nuttx/net/uip/uip_lock.c
+++ b/nuttx/net/uip/uip_lock.c
@@ -39,6 +39,7 @@
#include <nuttx/config.h>
+#include <unistd.h>
#include <semaphore.h>
#include <assert.h>
#include <errno.h>