diff --git a/dmd2/mtype.c b/dmd2/mtype.c
index b2f3711e..8b872465 100644
--- a/dmd2/mtype.c
+++ b/dmd2/mtype.c
@@ -1890,7 +1890,7 @@ Expression *TypeArray::dotExp(Scope *sc, Expression *e, Identifier *ident)
     arguments->push(e);
 
 	if (!dup)
-	    arguments->push(new IntegerExp(0, size, Type::tint32));
+	    arguments->push(new IntegerExp(0, size, Type::tsize_t));
 	e = new CallExp(e->loc, ec, arguments);
 	if (ident == Id::idup)
 	{   Type *einv = next->invariantOf();