diff --git a/python/sglang/srt/models/dbrx.py b/python/sglang/srt/models/dbrx.py
index e37827565..0c7e16052 100644
--- a/python/sglang/srt/models/dbrx.py
+++ b/python/sglang/srt/models/dbrx.py
@@ -211,7 +211,7 @@ class DbrxAttention(nn.Module):
         self.head_dim = self.d_model // self.total_num_heads
         self.total_num_kv_heads = config.attn_config.kv_n_heads
         self.clip_qkv = config.attn_config.clip_qkv
-        self.rope_theta = config.attn_config.rope_parameters["rope_theta"]
+        self.rope_theta = config.attn_config.rope_theta
         self.max_position = config.max_seq_len
 
         # pylint: disable=invalid-name