diff --git a/libraries/AP_NavEKF3/AP_NavEKF3_Control.cpp b/libraries/AP_NavEKF3/AP_NavEKF3_Control.cpp
index fc08bed249..9ba410b9fe 100644
--- a/libraries/AP_NavEKF3/AP_NavEKF3_Control.cpp
+++ b/libraries/AP_NavEKF3/AP_NavEKF3_Control.cpp
@@ -533,7 +533,7 @@ void NavEKF3_core::checkGyroCalStatus(void)
 {
     // check delta angle bias variances
     const float delAngBiasVarMax = sq(radians(0.15f * dtEkfAvg));
-    if (effective_magCal() == MagCal::GSF_YAW) {
+    if (effectiveMagCal == MagCal::GSF_YAW) {
         // rotate the variances into earth frame and evaluate horizontal terms only as yaw component is poorly observable without a compass
         // which can make this check fail
         Vector3f delAngBiasVarVec = Vector3f(P[10][10],P[11][11],P[12][12]);