diff --git a/python/sglang/srt/models/minicpm.py b/python/sglang/srt/models/minicpm.py
index 2df170f38..e7c94c85d 100644
--- a/python/sglang/srt/models/minicpm.py
+++ b/python/sglang/srt/models/minicpm.py
@@ -138,8 +138,6 @@ class MiniCPMAttention(nn.Module):
             base=rope_theta,
             rope_scaling=rope_scaling,
         )
-        # set rope as fp32 instead of bf16
-        self.rotary_emb.cos_sin_cache = self.rotary_emb._compute_cos_sin_cache()
         self.attn = RadixAttention(
             self.num_heads,
             self.head_dim,