diff --git a/plugin/chassis.hpp b/plugin/chassis.hpp
index 67528dd..b586f80 100644
--- a/plugin/chassis.hpp
+++ b/plugin/chassis.hpp
@@ -24,17 +24,6 @@
 #include "DistrhoPlugin.hpp"
 #include "voice.hpp"
 
-class SVF {
-   public:
-    SVF(float cutoff, float q, float samplerate);
-    void setFreq(float cutoff, float q, float samplerate);
-    float lpStep(float in);
-
-   private:
-    float w, a, b;
-    float c1, c2, d0;
-    float z1, z2, x;
-};
 
 START_NAMESPACE_DISTRHO