--- a/ryosmk/libroccatryosmk/ryos_device.h
+++ b/ryosmk/libroccatryosmk/ryos_device.h
@@ -22,7 +22,7 @@
 
 G_BEGIN_DECLS
 
-enum {
+typedef enum {
 	RYOS_WRITE_CHECK_WAIT_LIGHT_CONTROL = 10,
 } RyosWriteCheckWait;