diff --git a/Eigen/src/Core/arch/CUDA/Half.h b/Eigen/src/Core/arch/CUDA/Half.h
index 212aa0d5d..7f484b636 100644
--- a/Eigen/src/Core/arch/CUDA/Half.h
+++ b/Eigen/src/Core/arch/CUDA/Half.h
@@ -414,6 +414,7 @@ using ::log;
 using ::sqrt;
 using ::floor;
 using ::ceil;
+using ::isfinite;
 
 #if __cplusplus > 199711L
 template <>