diff --git a/src/cuda/model.cmake b/src/cuda/model.cmake
index 6202b2d..7c1b0d6 100644
--- a/src/cuda/model.cmake
+++ b/src/cuda/model.cmake
@@ -32,7 +32,8 @@ macro(setup)
     register_definitions(${MEM})
 
     # add -forward-unknown-to-host-compiler for compatibility reasons
-    set(CMAKE_CUDA_FLAGS ${CMAKE_CUDA_FLAGS} "-forward-unknown-to-host-compiler -arch=${CUDA_ARCH}" ${CUDA_EXTRA_FLAGS})
+    set(CMAKE_CUDA_FLAGS ${CMAKE_CUDA_FLAGS} "-forward-unknown-to-host-compiler" "-arch=${CUDA_ARCH}" ${CUDA_EXTRA_FLAGS})
+    string(REPLACE ";" " " CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS}")
 
     # CMake defaults to -O2 for CUDA at Release, let's wipe that and use the global RELEASE_FLAG
     # appended later