diff --git a/sys/net/link_layer/ng_nomac/ng_nomac.c b/sys/net/link_layer/ng_nomac/ng_nomac.c
index 6f753c7de2..90ea92048d 100644
--- a/sys/net/link_layer/ng_nomac/ng_nomac.c
+++ b/sys/net/link_layer/ng_nomac/ng_nomac.c
@@ -27,6 +27,11 @@
 #define ENABLE_DEBUG    (0)
 #include "debug.h"
 
+#if ENABLE_DEBUG
+/* For PRIu16 etc. */
+#include <inttypes.h>
+#endif
+
 /**
  * @brief   Function called by the device driver on device events
  *