diff --git a/Eigen/Core b/Eigen/Core
index d2edbd2bc..f613ee9aa 100644
--- a/Eigen/Core
+++ b/Eigen/Core
@@ -55,6 +55,10 @@
   #define EIGEN_DEVICE_FUNC
 #endif
 
+#ifdef __NVCC__
+#define EIGEN_DONT_VECTORIZE
+#endif
+
 // When compiling CUDA device code with NVCC, pull in math functions from the
 // global namespace.  In host mode, and when device doee with clang, use the
 // std versions.