diff --git a/audio/audio_filters/eq.c b/audio/audio_filters/eq.c
index 5a9b17ba4c..0660245dd5 100644
--- a/audio/audio_filters/eq.c
+++ b/audio/audio_filters/eq.c
@@ -17,16 +17,13 @@
 #include <string.h>
 
 #include <retro_inline.h>
+#include <retro_miscellaneous.h>
 #include <filters.h>
 
 #include "dspfilter.h"
 
 #include "fft/fft.c"
 
-#ifndef M_PI
-#define M_PI 3.1415926535897932384626433832795
-#endif
-
 #ifndef min
 #define min(a, b) ((a) < (b) ? (a) : (b))
 #endif