diff --git a/docs/proposals/20210301-enhancement_of_YurtHub_caching_ability.md b/docs/proposals/20210301-enhancement_of_YurtHub_caching_ability.md
index 6a7079786fb..0433bf544f1 100644
--- a/docs/proposals/20210301-enhancement_of_YurtHub_caching_ability.md
+++ b/docs/proposals/20210301-enhancement_of_YurtHub_caching_ability.md
@@ -164,7 +164,7 @@ Remove the restriction that only certain resources can be cached by removing [re
 
 #### Why the WithoutConversionCodecFactory loses GVK information
 
-The reason why object misses the field of apiverison and kind is YurtHub using [serializer.WithoutConversionCodecFactory](https://github.com/alibaba/openyurt/blob/7095962687e2666a27d14e436b96ef893b228beb/pkg/yurthub/kubernetes/serializer/serializer.go#L48) as NegotiatedSerializer. Because the WithoutConversionCodecFactory  is a CodecFactory that will explicitly ignore requests to perform conversion, the GVK information will be ignored when this WithoutConversionCodecFactory use the decoder (which is this [Decoder](https://github.com/kubernetes/kubernetes/blob/994b5c6cc20bda188ac9bc33217f2dbc7ecf45bb/staging/src/k8s.io/apimachinery/pkg/runtime/helper.go#L256), the following is the old decoder's code). 
+The reason why object misses the field of apiverison and kind is YurtHub using [serializer.WithoutConversionCodecFactory](https://github.com/alibaba/openyurt/blob/7095962687e2666a27d14e436b96ef893b228beb/pkg/yurthub/kubernetes/serializer/serializer.go#L48) as NegotiatedSerializer. Because the WithoutConversionCodecFactory  is a CodecFactory that will explicitly ignore requests to perform conversion, the GVK information will be ignored when this WithoutConversionCodecFactory use the decoder (which is this [Decoder](https://github.com/kubernetes/kubernetes/blob/994b5c6cc20bda188ac9bc33217f2dbc7ecf45bb/staging/src/k8s.io/apimachinery/pkg/runtime/helper.go#L256), the following is the old decoder's code).
 
 ```go
 // Decode does not do conversion. It removes the gvk during deserialization.