diff --git a/Eigen/src/Core/arch/CUDA/MathFunctions.h b/Eigen/src/Core/arch/CUDA/MathFunctions.h
index 3548f2fa2..987a5291c 100644
--- a/Eigen/src/Core/arch/CUDA/MathFunctions.h
+++ b/Eigen/src/Core/arch/CUDA/MathFunctions.h
@@ -57,15 +57,14 @@ double2 pexp<double2>(const double2& a)
 }
 
 template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
-float4 pexp<float4>(const float4& a)
+float4 pexpm1<float4>(const float4& a)
 {
   return make_float4(expm1f(a.x), expm1f(a.y), expm1f(a.z), expm1f(a.w));
 }
 
 template<> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE
-double2 pexp<double2>(const double2& a)
+double2 pexpm1<double2>(const double2& a)
 {
-  using ::expm1;
   return make_double2(expm1(a.x), expm1(a.y));
 }