diff --git a/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.cpp b/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.cpp
index b4d8be7bbc..783032f8f6 100644
--- a/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.cpp
+++ b/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.cpp
@@ -37,9 +37,7 @@ AP_OpticalFlow_Onboard::AP_OpticalFlow_Onboard(OpticalFlow &_frontend) :
 void AP_OpticalFlow_Onboard::init(void)
 {
     /* register callback to get gyro data */
-    hal.opticalflow->init(
-            FUNCTOR_BIND_MEMBER(&AP_OpticalFlow_Onboard::_get_gyro,
-                                void, float&, float&, float&));
+    hal.opticalflow->init();
 }
 
 void AP_OpticalFlow_Onboard::update()
@@ -102,13 +100,4 @@ void AP_OpticalFlow_Onboard::update()
 #endif
 }
 
-void AP_OpticalFlow_Onboard::_get_gyro(float &rate_x, float &rate_y,
-                                       float &rate_z)
-{
-    Vector3f rates = get_ahrs().get_gyro();
-    rate_x = rates.x;
-    rate_y = rates.y;
-    rate_z = rates.z;
-}
-
 #endif
diff --git a/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.h b/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.h
index ea6ccee5e2..30487b87d1 100644
--- a/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.h
+++ b/libraries/AP_OpticalFlow/AP_OpticalFlow_Onboard.h
@@ -28,6 +28,5 @@ public:
     void init(void);
     void update(void);
 private:
-    void _get_gyro(float&, float&, float&);
     uint32_t _last_read_ms;
 };