diff --git a/vllm/v1/attention/backends/gdn_attn.py b/vllm/v1/attention/backends/gdn_attn.py
index 27df94d7bd..e4365a90c7 100644
--- a/vllm/v1/attention/backends/gdn_attn.py
+++ b/vllm/v1/attention/backends/gdn_attn.py
@@ -92,10 +92,9 @@ class GDNAttentionMetadataBuilder(AttentionMetadataBuilder[GDNAttentionMetadata]
         vllm_config: VllmConfig,
         device: torch.device,
     ):
-        self.vllm_config = vllm_config
+        super().__init__(kv_cache_spec, layer_names, vllm_config, device)
         self.compilation_config = vllm_config.compilation_config
         self.speculative_config = vllm_config.speculative_config
-        self.kv_cache_spec = kv_cache_spec
         from vllm.model_executor.layers.mamba.gdn.qwen_gdn_linear_attn import (
             _resolve_gdn_prefill_backend,
         )