diff --git a/Eigen/src/Core/arch/CUDA/Half.h b/Eigen/src/Core/arch/CUDA/Half.h
index 44645522a..70050358c 100644
--- a/Eigen/src/Core/arch/CUDA/Half.h
+++ b/Eigen/src/Core/arch/CUDA/Half.h
@@ -414,8 +414,8 @@ using ::log;
 using ::sqrt;
 using ::floor;
 using ::ceil;
-template <>
 
+template <>
 struct hash<Eigen::half> {
   size_t operator()(const Eigen::half& a) const {
     return std::hash<unsigned short>()(a.x);