diff --git a/libraries/SocketWrapper/ZephyrUDP.h b/libraries/SocketWrapper/ZephyrUDP.h
index 884639bd..4770290f 100644
--- a/libraries/SocketWrapper/ZephyrUDP.h
+++ b/libraries/SocketWrapper/ZephyrUDP.h
@@ -17,6 +17,8 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
+#pragma once
+
 #include "Arduino.h"
 #include "SocketWrapper.h"
 #include "api/Udp.h"