diff --git a/docs/en/protocols/Skywalking-Cross-Process-Correlation-Headers-Protocol-v1.md b/docs/en/protocols/Skywalking-Cross-Process-Correlation-Headers-Protocol-v1.md
index 2f17482f6..5254f3523 100644
--- a/docs/en/protocols/Skywalking-Cross-Process-Correlation-Headers-Protocol-v1.md
+++ b/docs/en/protocols/Skywalking-Cross-Process-Correlation-Headers-Protocol-v1.md
@@ -4,7 +4,7 @@
 The Cross Process Correlation Headers Protocol is used to transport custom data by leveraging the capability of [Cross Process Propagation Headers Protocol](Skywalking-Cross-Process-Propagation-Headers-Protocol-v3.md). 
 
 This is an optional and additional protocol for language tracer implementation. All tracer implementation could consider to implement this.
-Cross Process Correlation Header key is `sw7-correlation`. The value is the `encoded(key):encoded(value)` list with elements splitted by `,` such as `base64(string key):base64(string value),base64(string key2):base64(string value2)`.
+Cross Process Correlation Header key is `sw8-correlation`. The value is the `encoded(key):encoded(value)` list with elements splitted by `,` such as `base64(string key):base64(string value),base64(string key2):base64(string value2)`.
 
 ## Recommendations of language APIs
 Recommended implementation in different language API.