diff --git a/vllm/model_executor/layers/quantization/quark/quark_moe.py b/vllm/model_executor/layers/quantization/quark/quark_moe.py
index 0a5db4e71fdb..a3e0f24fb662 100644
--- a/vllm/model_executor/layers/quantization/quark/quark_moe.py
+++ b/vllm/model_executor/layers/quantization/quark/quark_moe.py
@@ -730,10 +730,12 @@ def __init__(
             get_current_vllm_config().model_config.hf_config, "model_type", None
         )
 
-        self.emulate = (
-            not current_platform.supports_mx()
-            or not self.ocp_mx_scheme.startswith("w_mxfp4")
-        ) and (self.mxfp4_backend is None or not self.use_rocm_aiter_moe)
+        self.emulate = not (
+            current_platform.supports_mx()
+            and self.ocp_mx_scheme.startswith("w_mxfp4")
+            and self.mxfp4_backend is not None
+            and self.use_rocm_aiter_moe
+        )
 
         # CK's pre-compiled MXFP4 MoE GEMM kernel instances have dimension
         # alignment requirements. When violated (e.g. MiniMax-M2.1 with