diff --git a/python/sglang/kernels/ops/moe/ep_moe_kernels.py b/python/sglang/kernels/ops/moe/ep_moe_kernels.py
index 938b82951..9268572e3 100644
--- a/python/sglang/kernels/ops/moe/ep_moe_kernels.py
+++ b/python/sglang/kernels/ops/moe/ep_moe_kernels.py
@@ -241,7 +241,7 @@ def pre_reorder_triton_kernel_for_cutlass_moe(
         for idx in range(topk):
             expert_id = tl.load(token_topk_ids_ptr + idx)
             if expert_id != num_local_experts:
-                dst_idx = tl.load(token_src2dst_ptr + idx)
+                dst_idx = tl.load(token_src2dst_ptr + idx).to(tl.int64)
                 tl.store(dst_ptr_offs + dst_idx * hidden_size, out_data, mask=mask)