diff --git a/src/lib/rc/dsm.h b/src/lib/rc/dsm.h
index 6660223df7..e42897e407 100644
--- a/src/lib/rc/dsm.h
+++ b/src/lib/rc/dsm.h
@@ -54,7 +54,7 @@ __BEGIN_DECLS
 #define DSM_BUFFER_SIZE		(DSM_FRAME_SIZE + DSM_FRAME_SIZE / 2)
 
 __EXPORT int	dsm_init(const char *device);
-__EXPORT void	dsm_deinit();
+__EXPORT void	dsm_deinit(void);
 __EXPORT void	dsm_proto_init(void);
 __EXPORT int	dsm_config(int dsm_fd);
 __EXPORT bool	dsm_input(int dsm_fd, uint16_t *values, uint16_t *num_values, bool *dsm_11_bit, uint8_t *n_bytes,