diff --git a/libraries/AP_AHRS/AP_AHRS_NavEKF.cpp b/libraries/AP_AHRS/AP_AHRS_NavEKF.cpp
index 08adf4ad67..1bf2b27bf1 100644
--- a/libraries/AP_AHRS/AP_AHRS_NavEKF.cpp
+++ b/libraries/AP_AHRS/AP_AHRS_NavEKF.cpp
@@ -318,9 +318,9 @@ bool AP_AHRS_NavEKF::initialised(void) const
 };
 
 // write optical flow data to EKF
-void  AP_AHRS_NavEKF::writeOptFlowMeas(uint8_t &rawFlowQuality, Vector2f &rawFlowRates, float &rawSonarRange, uint32_t &msecFlowMeas)
+void  AP_AHRS_NavEKF::writeOptFlowMeas(uint8_t &rawFlowQuality, Vector2f &rawFlowRates, Vector2f &rawGyroRates, float &rawSonarRange, uint32_t &msecFlowMeas)
 {
-    EKF.writeOptFlowMeas(rawFlowQuality, rawFlowRates, rawSonarRange, msecFlowMeas);
+    EKF.writeOptFlowMeas(rawFlowQuality, rawFlowRates, rawGyroRates, rawSonarRange, msecFlowMeas);
 }
 #endif // AP_AHRS_NAVEKF_AVAILABLE
 
diff --git a/libraries/AP_AHRS/AP_AHRS_NavEKF.h b/libraries/AP_AHRS/AP_AHRS_NavEKF.h
index f5a113730a..92bed9039b 100644
--- a/libraries/AP_AHRS/AP_AHRS_NavEKF.h
+++ b/libraries/AP_AHRS/AP_AHRS_NavEKF.h
@@ -102,7 +102,7 @@ public:
     bool get_relative_position_NED(Vector3f &vec) const;
 
     // write optical flow measurements to EKF
-    void writeOptFlowMeas(uint8_t &rawFlowQuality, Vector2f &rawFlowRates, float &rawSonarRange, uint32_t &msecFlowMeas);
+    void writeOptFlowMeas(uint8_t &rawFlowQuality, Vector2f &rawFlowRates, Vector2f &rawGyroRates, float &rawSonarRange, uint32_t &msecFlowMeas);
 
     void set_ekf_use(bool setting) { _ekf_use.set(setting); }