diff --git a/targets/TARGET_NORDIC/TARGET_NRF5x/port_api.c b/targets/TARGET_NORDIC/TARGET_NRF5x/port_api.c
index e8c57184a5..346c0bf45c 100644
--- a/targets/TARGET_NORDIC/TARGET_NRF5x/port_api.c
+++ b/targets/TARGET_NORDIC/TARGET_NRF5x/port_api.c
@@ -36,6 +36,8 @@
  * 
  */
 
+#if DEVICE_PORTIN || DEVICE_PORTOUT || DEVICE_PORTINOUT
+
 #include "port_api.h"
 #include "pinmap.h"
 
@@ -132,3 +134,5 @@ int port_read(port_t *obj)
 {
     return ((m_ports[obj->port]->IN) & obj->mask);
 }
+
+#endif // DEVICE_PORTIN || DEVICE_PORTOUT || DEVICE_PORTINOUT
\ No newline at end of file