diff --git a/src/engine/platform/sound/c140.c b/src/engine/platform/sound/c140.c
index dc0ff02e..948b2f07 100644
--- a/src/engine/platform/sound/c140.c
+++ b/src/engine/platform/sound/c140.c
@@ -56,8 +56,8 @@ void c140_tick(struct c140_t *c140, const int cycle)
 		c140->rout += c140->voice[i].rout;
 	}
 	// scale as 16bit
-	c140->lout >>= 13;
-	c140->rout >>= 13;
+	c140->lout >>= 10;
+	c140->rout >>= 10;
 }
 
 void c140_voice_tick(struct c140_t *c140, const unsigned char voice, const int cycle)