diff --git a/src/engine/enginefilterbutterworth8.cpp b/src/engine/enginefilterbutterworth8.cpp
index 329fd73..b7dd5a3 100644
--- a/src/engine/enginefilterbutterworth8.cpp
+++ b/src/engine/enginefilterbutterworth8.cpp
@@ -18,7 +18,6 @@
 #include "engine/enginefilterbutterworth8.h"
 #include "engine/enginefilter.h"
 #include "engine/engineobject.h"
-#include "../lib/fidlib-0.9.10/fidlib.h"
 
 inline CSAMPLE _processLowpass(CSAMPLE *coef, CSAMPLE *buf, register CSAMPLE val);
 inline CSAMPLE _processBandpass(CSAMPLE *coef, CSAMPLE *buf, register CSAMPLE val);