diff --git a/ArduSub/failsafe.cpp b/ArduSub/failsafe.cpp
index 701fa9aba3..e27c8152ef 100644
--- a/ArduSub/failsafe.cpp
+++ b/ArduSub/failsafe.cpp
@@ -110,10 +110,9 @@ void Sub::failsafe_ekf_check()
 
     float posVar, hgtVar, tasVar;
     Vector3f magVar;
-    Vector2f offset;
     float compass_variance;
     float vel_variance;
-    ahrs.get_variances(vel_variance, posVar, hgtVar, magVar, tasVar, offset);
+    ahrs.get_variances(vel_variance, posVar, hgtVar, magVar, tasVar);
     compass_variance = magVar.length();
 
     if (compass_variance < g.fs_ekf_thresh && vel_variance < g.fs_ekf_thresh) {