diff --git a/compiler/optimizing/code_generator_arm64.cc b/compiler/optimizing/code_generator_arm64.cc
index 9762ee8..368c543 100644
--- a/compiler/optimizing/code_generator_arm64.cc
+++ b/compiler/optimizing/code_generator_arm64.cc
@@ -1533,7 +1533,9 @@
       HConstant* src_cst = source.GetConstant();
       CPURegister temp;
       if (src_cst->IsZeroBitPattern()) {
-        temp = (src_cst->IsLongConstant() || src_cst->IsDoubleConstant()) ? xzr : wzr;
+        temp = (src_cst->IsLongConstant() || src_cst->IsDoubleConstant())
+            ? Register(xzr)
+            : Register(wzr);
       } else {
         if (src_cst->IsIntConstant()) {
           temp = temps.AcquireW();
diff --git a/compiler/optimizing/common_arm64.h b/compiler/optimizing/common_arm64.h
index 776a483..93ea090 100644
--- a/compiler/optimizing/common_arm64.h
+++ b/compiler/optimizing/common_arm64.h
@@ -130,8 +130,8 @@
   Primitive::Type input_type = input->GetType();
   if (input->IsConstant() && input->AsConstant()->IsZeroBitPattern()) {
     return (Primitive::ComponentSize(input_type) >= vixl::aarch64::kXRegSizeInBytes)
-        ? vixl::aarch64::xzr
-        : vixl::aarch64::wzr;
+        ? vixl::aarch64::Register(vixl::aarch64::xzr)
+        : vixl::aarch64::Register(vixl::aarch64::wzr);
   }
   return InputCPURegisterAt(instr, index);
 }