diff --git a/src/xenia/cpu/backend/a64/a64_emitter.cc b/src/xenia/cpu/backend/a64/a64_emitter.cc
index 1f84a0e8f..8c06eaabc 100644
--- a/src/xenia/cpu/backend/a64/a64_emitter.cc
+++ b/src/xenia/cpu/backend/a64/a64_emitter.cc
@@ -689,8 +689,8 @@ oaknut::XReg A64Emitter::GetNativeParam(uint32_t param) {
 }
 
 // Important: If you change these, you must update the thunks in a64_backend.cc!
-oaknut::XReg A64Emitter::GetContextReg() { return X14; }
-oaknut::XReg A64Emitter::GetMembaseReg() { return X15; }
+oaknut::XReg A64Emitter::GetContextReg() { return X19; }
+oaknut::XReg A64Emitter::GetMembaseReg() { return X20; }
 
 void A64Emitter::ReloadContext() {
   // mov(GetContextReg(), qword[rsp + StackLayout::GUEST_CTX_HOME]);
diff --git a/src/xenia/cpu/backend/a64/a64_emitter.h b/src/xenia/cpu/backend/a64/a64_emitter.h
index a0f4a88c6..d44700847 100644
--- a/src/xenia/cpu/backend/a64/a64_emitter.h
+++ b/src/xenia/cpu/backend/a64/a64_emitter.h
@@ -137,7 +137,7 @@ class A64Emitter : public oaknut::CodeBlock, public oaknut::CodeGenerator {
             std::vector<SourceMapEntry>* out_source_map);
 
  public:
-  // Reserved:  XSP, X14, X15
+  // Reserved:  XSP, X19, X20
   // Scratch:   X0/X1/X2
   //            V0-2
   // Available: X1, X10-r15