diff --git a/src/gen.cpp b/src/gen.cpp
index 3ede9fe..ca8af98 100644
--- a/src/gen.cpp
+++ b/src/gen.cpp
@@ -671,6 +671,8 @@ struct Code : public mcl::Generator {
 		Operand y(Int, unit);
 		std::string name = "mulPv" + cybozu::itoa(bit) + "x" + cybozu::itoa(unit);
 		mulPvM[bit] = Function(name, z, px, y);
+		// workaround at https://github.com/herumi/mcl/pull/82
+//		mulPvM[bit].setPrivate();
 		verifyAndSetPrivate(mulPvM[bit]);
 		beginFunc(mulPvM[bit]);
 		OperandVec L(N), H(N);