diff --git a/configs/milvus.yaml b/configs/milvus.yaml
index 6865b05248..02746d9f84 100644
--- a/configs/milvus.yaml
+++ b/configs/milvus.yaml
@@ -182,6 +182,6 @@ common:
 
 knowhere:
   # Default value: auto
-  # Valid values: [auto, avx512, avx2, sse]
+  # Valid values: [auto, avx512, avx2, avx, sse4_2]
   # This configuration is only used by querynode and indexnode, it selects CPU instruction set for Searching and Index-building.
   simdType: auto