diff --git a/include/lmms_math.h b/include/lmms_math.h
index 8f09a1b5a..0ec8ccc49 100644
--- a/include/lmms_math.h
+++ b/include/lmms_math.h
@@ -28,10 +28,20 @@
 
 #include <stdint.h>
 #include "lmms_constants.h"
+#include "lmmsconfig.h"
 #include <QtCore/QtGlobal>
 
 #include <math.h>
 
+#if defined (LMMS_BUILD_WIN32) || defined (LMMS_BUILD_APPLE) 
+#ifndef isnanf
+#define isnanf(x)	isnan(x)
+#endif
+#ifndef isinff
+#define isinff(x)	isinf(x)
+#endif
+#endif
+
 #ifdef __INTEL_COMPILER
 
 static inline float absFraction( const float _x )
diff --git a/plugins/dynamics_processor/dynamics_processor.cpp b/plugins/dynamics_processor/dynamics_processor.cpp
index e825cfe8d..9954c92e5 100644
--- a/plugins/dynamics_processor/dynamics_processor.cpp
+++ b/plugins/dynamics_processor/dynamics_processor.cpp
@@ -30,15 +30,6 @@
 
 #include "embed.cpp"
 
-#if defined (LMMS_BUILD_WIN32) || defined (LMMS_BUILD_APPLE) 
-#ifndef isnanf
-#define isnanf(x)	isnan(x)
-#endif
-#ifndef isinff
-#define isinff(x)	isinf(x)
-#endif
-#endif
-
 extern "C"
 {