1 files changed, 1 insertions, 1 deletions

diff --git a/src/common.h b/src/common.h
index ece94cd..b688711 100644
--- a/src/common.h
+++ b/src/common.h
@@ -594,7 +594,7 @@ sound_volume(SoundChannel channels, u8 volume) {
 #define SOUND_SQUARE_LEN(N)      (N)
 #define SOUND_SQUARE_DUTY(N)     ((N) << 0x6)
 #define SOUND_SQUARE_ENV_TIME(N) ((N) << 0x8)
-#define SOUND_SQUARE_ENV_INC     (1 << 0xB)
+#define SOUND_SQUARE_ENV_INC(N)  ((N) << 0xB)
 #define SOUND_SQUARE_ENV_VOL(N)  ((N) << 0xC)
 
 // DMG square frequency bits.