diff --git a/src/ir.h b/src/ir.h
index 1719c73..47a71ae 100644
--- a/src/ir.h
+++ b/src/ir.h
@@ -46,6 +46,7 @@ extern "C" {
 
 /** @defgroup internal_ir Internal: IR Sensor */
 /** @{ */
+void wiiuse_set_ir_mode(struct wiimote_t *wm);
 void calculate_basic_ir(struct wiimote_t* wm, byte* data);
 void calculate_extended_ir(struct wiimote_t* wm, byte* data);
 float calc_yaw(struct ir_t* ir);