diff --git a/easyvolcap/runners/volumetric_video_viewer.py b/easyvolcap/runners/volumetric_video_viewer.py
index cf54822..1efc430 100644
--- a/easyvolcap/runners/volumetric_video_viewer.py
+++ b/easyvolcap/runners/volumetric_video_viewer.py
@@ -1401,7 +1401,6 @@ def init_camera(self, camera_cfg: dotdict = dotdict(), view_index: int = None):
 
     def init_quad(self):
         from easyvolcap.utils.gl_utils import Quad
-        from cuda import cudart
         self.quad = Quad(H=self.H, W=self.W, use_quad_cuda=self.use_quad_cuda, compose=self.compose, compose_power=self.compose_power)  # will blit this texture to screen if rendered
 
     def init_opengl(self):
diff --git a/easyvolcap/utils/gl_utils.py b/easyvolcap/utils/gl_utils.py
index 13e5a7d..ccc59ed 100644
--- a/easyvolcap/utils/gl_utils.py
+++ b/easyvolcap/utils/gl_utils.py
@@ -567,13 +567,13 @@ def init_texture(self):
         gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, old_fbo)
 
         if self.use_quad_cuda:
-            from cuda import cudart
-            if self.compose:
-                # Both reading and writing of this resource is required
-                flags = cudart.cudaGraphicsRegisterFlags.cudaGraphicsRegisterFlagsNone
-            else:
-                flags = cudart.cudaGraphicsRegisterFlags.cudaGraphicsRegisterFlagsWriteDiscard
             try:
+                from cuda import cudart
+                if self.compose:
+                    # Both reading and writing of this resource is required
+                    flags = cudart.cudaGraphicsRegisterFlags.cudaGraphicsRegisterFlagsNone
+                else:
+                    flags = cudart.cudaGraphicsRegisterFlags.cudaGraphicsRegisterFlagsWriteDiscard
                 self.cu_tex = CHECK_CUDART_ERROR(cudart.cudaGraphicsGLRegisterImage(self.tex, gl.GL_TEXTURE_2D, flags))
             except RuntimeError as e:
                 log(red('Failed to initialize Quad with CUDA-GL interop, will use slow upload: '), e)