diff --git a/src/lib/mathlib/math/filter/LowPassFilter2p.hpp b/src/lib/mathlib/math/filter/LowPassFilter2p.hpp
index d77da0dac3..2ecc17f652 100644
--- a/src/lib/mathlib/math/filter/LowPassFilter2p.hpp
+++ b/src/lib/mathlib/math/filter/LowPassFilter2p.hpp
@@ -166,7 +166,7 @@ protected:
 	float _a1{0.f};
 	float _a2{0.f};
 
-	float _b0{0.f};
+	float _b0{1.f};
 	float _b1{0.f};
 	float _b2{0.f};