diff --git a/vllm_ascend/quantization/quantizer.py b/vllm_ascend/quantization/quantizer.py
index 487597c..988f8bd 100644
--- a/vllm_ascend/quantization/quantizer.py
+++ b/vllm_ascend/quantization/quantizer.py
@@ -75,8 +75,8 @@ class VLLMAscendQuantizer:
                     "vllm.model_executor.layers.layernorm.RMSNorm", "__init__",
                     [wrapper_rmsnorm_init])
                 VLLMAscendQuantizer.apply_patch(
-                    "vllm.model_executor.layers.layernorm.RMSNorm",
-                    "forward_oot", [wrapper_rmsnorm_forward_oot])
+                    "vllm_ascend.ops.layernorm.AscendRMSNorm", "forward_oot",
+                    [wrapper_rmsnorm_forward_oot])
                 VLLMAscendQuantizer.apply_patch(
                     "vllm.model_executor.layers.vocab_parallel_embedding.VocabParallelEmbedding",
                     "__init__", [wrapper_vocab_parallel_embedding_init])