diff --git a/fastvideo/platforms/cuda.py b/fastvideo/platforms/cuda.py
index 7ca3b2ee2..39b593026 100644
--- a/fastvideo/platforms/cuda.py
+++ b/fastvideo/platforms/cuda.py
@@ -183,7 +183,8 @@ class CudaPlatformBase(Platform):
                 raise ImportError(
                     "The Video Sparse Attention backend is not installed. "
                     "To install it, please follow the instructions at: "
-                    "https://hao-ai-lab.github.io/FastVideo/video_sparse_attention/installation.html ") from e
+                    "https://hao-ai-lab.github.io/FastVideo/video_sparse_attention/installation.html "
+                ) from e
 
         elif selected_backend == AttentionBackendEnum.VMOBA_ATTN:
             try: