diff --git a/src/modules/ekf2/Utility/InnovationLpf.hpp b/src/modules/ekf2/Utility/InnovationLpf.hpp
index adf897406e..89964b0d71 100644
--- a/src/modules/ekf2/Utility/InnovationLpf.hpp
+++ b/src/modules/ekf2/Utility/InnovationLpf.hpp
@@ -75,5 +75,5 @@ public:
 	}
 
 private:
-	float _x; ///< current state of the filter
+	float _x{}; ///< current state of the filter
 };