diff --git a/intern/cycles/device/device_optix.cpp b/intern/cycles/device/device_optix.cpp
index 979ea7dba23..a510e538031 100644
--- a/intern/cycles/device/device_optix.cpp
+++ b/intern/cycles/device/device_optix.cpp
@@ -1432,6 +1432,8 @@ class OptiXDevice : public Device {
           size_t motion_transform_size = sizeof(OptixSRTMotionTransform) +
                                          motion_keys * sizeof(OptixSRTData);
 
+          const CUDAContextScope scope(cuda_context);
+
           CUdeviceptr motion_transform_gpu = 0;
           check_result_cuda_ret(cuMemAlloc(&motion_transform_gpu, motion_transform_size));
           as_mem.push_back(motion_transform_gpu);