diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index a6f22ec8..b360816e 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -211,6 +211,9 @@
 
 // CUDA
 #elif defined(__CUDACC__)
+#	if !defined(CUDA_VERSION) && !defined(GLM_FORCE_CUDA)
+#		include <cuda.h>  // make sure version is defined since nvcc does not define it itself! 
+#	endif
 #	if CUDA_VERSION < 3000
 #		error "GLM requires CUDA 3.0 or higher"
 #	else