diff --git a/tests/test_pipeline_real_weights.py b/tests/test_pipeline_real_weights.py
index 1a5a8144..61de57a0 100644
--- a/tests/test_pipeline_real_weights.py
+++ b/tests/test_pipeline_real_weights.py
@@ -10,8 +10,8 @@ import glob
 
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)) + '/..')
 
-# Direct import from vllm/ subdirectory (not the pip-installed vllm)
-from nvfp4_cutedsl import CuTeDSLMoERunner
+# Must be run with system Python (not venv) — CuTeDSL is in system site-packages
+from vllm.nvfp4_cutedsl import CuTeDSLMoERunner
 
 # ============================================================
 # CONFIG