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-rw-r--r--quantum/audio/voices.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
index 01f257f4d4..4f511c93ba 100644
--- a/quantum/audio/voices.c
+++ b/quantum/audio/voices.c
@@ -16,7 +16,9 @@
  */
 #include "voices.h"
 #include "audio.h"
+#include "timer.h"
 #include <stdlib.h>
+#include <math.h>
 
 uint8_t note_timbre      = TIMBRE_DEFAULT;
 bool    glissando        = false;