diff --git a/Grid/threads/Accelerator.h b/Grid/threads/Accelerator.h
index 74a3ea22..29d12904 100644
--- a/Grid/threads/Accelerator.h
+++ b/Grid/threads/Accelerator.h
@@ -90,6 +90,7 @@ void     acceleratorInit(void);
 //////////////////////////////////////////////
 
 #ifdef GRID_CUDA
+#include <cuda.h>
 
 #ifdef __CUDA_ARCH__
 #define GRID_SIMT