diff --git a/include/uv-errno.h b/include/uv-errno.h
index 32bbc517..8a415331 100644
--- a/include/uv-errno.h
+++ b/include/uv-errno.h
@@ -422,4 +422,10 @@
 # define UV__EREMOTEIO (-4030)
 #endif
 
+#if defined(ENOTTY) && !defined(_WIN32)
+# define UV__ENOTTY (-ENOTTY)
+#else
+# define UV__ENOTTY (-4029)
+#endif
+
 #endif /* UV_ERRNO_H_ */
diff --git a/include/uv.h b/include/uv.h
index 0e4151d1..d6f8a216 100644
--- a/include/uv.h
+++ b/include/uv.h
@@ -141,6 +141,7 @@ extern "C" {
   XX(EMLINK, "too many links")                                                \
   XX(EHOSTDOWN, "host is down")                                               \
   XX(EREMOTEIO, "remote I/O error")                                           \
+  XX(ENOTTY, "inappropriate ioctl for device")                                \
 
 #define UV_HANDLE_TYPE_MAP(XX)                                                \
   XX(ASYNC, async)                                                            \