diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
index 33cd00391..631096191 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFunctors.h
@@ -69,7 +69,7 @@ struct scalar_sigmoid_op {
 
   template <typename Packet> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
   Packet packetOp(const Packet& x) const {
-    const Packet one = pset1<Packet>(1);
+    const Packet one = pset1<Packet>(T(1));
     return pdiv(one, padd(one, pexp(pnegate(x))));
   }
 };