1 files changed, 5 insertions, 1 deletions
diff --git a/freqshift~.c b/freqshift~.c
index fe99884..c97c183 100644
--- a/freqshift~.c
+++ b/freqshift~.c
@@ -5,10 +5,14 @@
 
 #include "m_pd.h"
 #include <math.h>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
 #ifdef _MSC_VER
 #pragma warning( disable : 4244 )
 #pragma warning( disable : 4305 )
-#define M_PI 3.14159265358979323846
 #endif
 
 /* ------------------------ freqshift~ ----------------------------- */