diff --git a/src/stock/voice.h b/src/stock/voice.h
index 0a64008a0..0f8b0d20b 100644
--- a/src/stock/voice.h
+++ b/src/stock/voice.h
@@ -41,7 +41,11 @@
 #define BACKLIGHT_BIT           0x04
 #define SPARE_BIT               0x08
 
-#define VOICE_Q_LENGTH          8
+#if defined(CPUM64)
+  #define VOICE_Q_LENGTH        8
+#else
+  #define VOICE_Q_LENGTH        20
+#endif
 
 // Voice states
 #define V_STARTUP               0