diff --git a/src/filter.hpp b/src/filter.hpp
index e7a2c95..32c1099 100755
--- a/src/filter.hpp
+++ b/src/filter.hpp
@@ -1,12 +1,13 @@
 /*-----------------------------------------------------------------------------
 
-© 1999, Steinberg Soft und Hardware GmbH, All Rights Reserved
+� 1999, Steinberg Soft und Hardware GmbH, All Rights Reserved
 
 -----------------------------------------------------------------------------*/
 #ifndef __FILTER_H
 #define __FILTER_H
 
 #include "public.sdk/source/vst2.x/audioeffectx.h"
+#include "iir.h"
 
 class Filter : public AudioEffectX
 {
diff --git a/src/filterMain.cpp b/src/filterMain.cpp
index edd1bbb..41bf085 100755
--- a/src/filterMain.cpp
+++ b/src/filterMain.cpp
@@ -3,8 +3,6 @@
 � 1999, Steinberg Soft und Hardware GmbH, All Rights Reserved
 
 -----------------------------------------------------------------------------*/
-#include <stdio.h>
-#include "iir.h"
 #include "filter.hpp"	// *change*
 
 static AudioEffect *effect = 0;
diff --git a/src/iir.h b/src/iir.h
index 5a6c055..3e0d6e3 100644
--- a/src/iir.h
+++ b/src/iir.h
@@ -4,6 +4,8 @@
 #ifndef IIR_H
 #define IIR_H
 
+#include <stdio.h>
+
 #define	pi			3.1415926535897932384626433832795
 
 #define IIR_FILTERTYPE_UNKNOWN     0x00000000