diff --git a/CHANGES b/CHANGES
index cb6ca14a7..e1bf60861 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3,6 +3,7 @@ Emulation fixes:
  - GB Audio: Fix initial sweep state
  - GB Audio: Fix deserializing audio channels 2 and 3
  - GBA Audio: Fix deserializing SOUNDCNT_L
+ - GBA Audio: Fix stereo in XQ audio
  - GBA Hardware: Fix GB Player detection on big endian platforms
  - GBA Video: Invalidate map cache when modifying BGCNT (fixes mgba.io/i/1846)
 Other fixes:
diff --git a/src/gba/extra/audio-mixer.c b/src/gba/extra/audio-mixer.c
index 85941536e..db1448b86 100644
--- a/src/gba/extra/audio-mixer.c
+++ b/src/gba/extra/audio-mixer.c
@@ -291,7 +291,7 @@ void _mp2kStep(struct GBAAudioMixer* mixer) {
 		}
 		if (mixer->p->externalMixing) {
 			blip_add_delta(mixer->p->psg.left, mixer->p->clock + i * interval, sample.left - mixer->last.left);
-			blip_add_delta(mixer->p->psg.right, mixer->p->clock + i * interval, sample.left - mixer->last.left);
+			blip_add_delta(mixer->p->psg.right, mixer->p->clock + i * interval, sample.right - mixer->last.right);
 		}
 		mixer->last = sample;
 	}