diff --git a/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.cpp b/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.cpp
index 23083f9b93..0754e1fc0c 100644
--- a/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.cpp
+++ b/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.cpp
@@ -882,6 +882,7 @@ ZeldaAudioRenderer::MixingBuffer* ZeldaAudioRenderer::BufferForID(u16 buffer_id)
 		case 0x0DC0: return &m_buf_unk0_reverb;
 		case 0x0E20: return &m_buf_unk1_reverb;
 		case 0x09A0: return &m_buf_unk0;  // Used by the GC IPL as a reverb dest.
+		case 0x0FA0: return &m_buf_unk1;  // Used by the GC IPL as a mixing dest.
 		default: return nullptr;
 	}
 }
@@ -1508,6 +1509,7 @@ void ZeldaAudioRenderer::DoState(PointerWrap& p)
 	p.Do(m_buf_unk0_reverb);
 	p.Do(m_buf_unk1_reverb);
 	p.Do(m_buf_unk0);
+	p.Do(m_buf_unk1);
 
 	p.Do(m_resampling_coeffs);
 	p.Do(m_const_patterns);
diff --git a/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.h b/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.h
index b49ffe117e..7a3ad011a5 100644
--- a/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.h
+++ b/Source/Core/Core/HW/DSPHLE/UCodes/Zelda.h
@@ -118,6 +118,7 @@ private:
 	MixingBuffer m_buf_unk0_reverb{};
 	MixingBuffer m_buf_unk1_reverb{};
 	MixingBuffer m_buf_unk0{};
+	MixingBuffer m_buf_unk1{};
 
 	// Maps a buffer "ID" (really, their address in the DSP DRAM...) to our
 	// buffers. Returns nullptr if no match is found.