diff --git a/benchmark/bench_jit_per_token_group_quant_8bit.py b/benchmark/bench_jit_per_token_group_quant_8bit.py
index 9668b804..d1b2b171 100644
--- a/benchmark/bench_jit_per_token_group_quant_8bit.py
+++ b/benchmark/bench_jit_per_token_group_quant_8bit.py
@@ -63,10 +63,15 @@ def aot_per_token_group_quant_8bit(x, group_size, dst_dtype, eps=1e-10):
     x_q = torch.empty_like(x, dtype=dst_dtype)
     x_s = torch.empty((m, n // group_size), device=x.device, dtype=torch.float32)
     min_8bit, max_8bit = _minmax(dst_dtype)
+    # Pin v1; enable_v2=None would import sglang (not in bench container).
     if dst_dtype == torch.int8:
-        sgl_per_token_group_quant_int8(x, x_q, x_s, group_size, eps, min_8bit, max_8bit)
+        sgl_per_token_group_quant_int8(
+            x, x_q, x_s, group_size, eps, min_8bit, max_8bit, enable_v2=False
+        )
     else:
-        sgl_per_token_group_quant_fp8(x, x_q, x_s, group_size, eps, min_8bit, max_8bit)
+        sgl_per_token_group_quant_fp8(
+            x, x_q, x_s, group_size, eps, min_8bit, max_8bit, enable_v2=False
+        )
     return x_q, x_s