diff --git a/src/hx/cppia/ArrayBuiltin.cpp b/src/hx/cppia/ArrayBuiltin.cpp
index 2d54c0a74..58de736a2 100644
--- a/src/hx/cppia/ArrayBuiltin.cpp
+++ b/src/hx/cppia/ArrayBuiltin.cpp
@@ -1305,7 +1305,7 @@ struct ArrayBuiltin : public ArrayBuiltinBase
          case af__set:
             {
                JitTemp thisVal(compiler, jtPointer);
-               JitTemp index(compiler, jtPointer);
+               JitTemp index(compiler, jtInt);
                ExprType elemType = (ExprType)ExprTypeOf<ELEM>::value;
                JitTemp tempVal(compiler, elemType);