diff --git a/src/synth/voice.c b/src/synth/voice.c
index ea0f9ff..eae76a0 100644
--- a/src/synth/voice.c
+++ b/src/synth/voice.c
@@ -1,6 +1,5 @@
 // --------------------------------------------------------------
 // --------------------------------------------------------------
-#include <string.h>
 #include <stdlib.h>
 #include <math.h>
 #include <time.h>