diff --git a/src/modules/ekf2/ekf2_main.cpp b/src/modules/ekf2/ekf2_main.cpp
index 034cf4d4fb..4c53b1fef7 100644
--- a/src/modules/ekf2/ekf2_main.cpp
+++ b/src/modules/ekf2/ekf2_main.cpp
@@ -180,7 +180,7 @@ private:
         control::BlockParamFloat *_requiredHdrift;      // maximum acceptable horizontal drift speed (m/s)
         control::BlockParamFloat *_requiredVdrift;      // maximum acceptable vertical drift speed (m/s)
 
-	EstimatorBase *_ekf;
+	EstimatorInterface *_ekf;
 
 	int update_subscriptions();