diff --git a/CodeGen/src/AssemblyBuilderA64.cpp b/CodeGen/src/AssemblyBuilderA64.cpp
index e7f50b14..a80003e9 100644
--- a/CodeGen/src/AssemblyBuilderA64.cpp
+++ b/CodeGen/src/AssemblyBuilderA64.cpp
@@ -496,7 +496,7 @@ void AssemblyBuilderA64::fcmpz(RegisterA64 src)
 {
     LUAU_ASSERT(src.kind == KindA64::d);
 
-    placeFCMP("fcmp", src, {src.kind, 0}, 0b11110'01'1, 0b01);
+    placeFCMP("fcmp", src, RegisterA64{src.kind, 0}, 0b11110'01'1, 0b01);
 }
 
 void AssemblyBuilderA64::fcsel(RegisterA64 dst, RegisterA64 src1, RegisterA64 src2, ConditionA64 cond)
diff --git a/CodeGen/src/IrRegAllocA64.cpp b/CodeGen/src/IrRegAllocA64.cpp
index 3609c8e2..dc18ab56 100644
--- a/CodeGen/src/IrRegAllocA64.cpp
+++ b/CodeGen/src/IrRegAllocA64.cpp
@@ -55,7 +55,7 @@ RegisterA64 IrRegAllocA64::allocReg(KindA64 kind)
     int index = setBit(set.free);
     set.free &= ~(1u << index);
 
-    return {kind, uint8_t(index)};
+    return RegisterA64{kind, uint8_t(index)};
 }
 
 RegisterA64 IrRegAllocA64::allocTemp(KindA64 kind)
@@ -73,7 +73,7 @@ RegisterA64 IrRegAllocA64::allocTemp(KindA64 kind)
     set.free &= ~(1u << index);
     set.temp |= 1u << index;
 
-    return {kind, uint8_t(index)};
+    return RegisterA64{kind, uint8_t(index)};
 }
 
 RegisterA64 IrRegAllocA64::allocReuse(KindA64 kind, uint32_t index, std::initializer_list<IrOp> oprefs)