diff --git a/src/xenia/apu/xma_decoder.cc b/src/xenia/apu/xma_decoder.cc
index cd04ebd91..a8dd319a6 100644
--- a/src/xenia/apu/xma_decoder.cc
+++ b/src/xenia/apu/xma_decoder.cc
@@ -346,6 +346,8 @@ void XmaDecoder::WriteRegister(uint32_t addr, uint32_t value) {
     // 0601h (1804h) is written to with 0x02000000 and 0x03000000 around a lock
     // operation
     switch (r) {
+      case 0x601:
+        break;
       default: {
         const auto register_info = register_file_.GetRegisterInfo(r);
         if (register_info) {