diff --git a/doc/sdk/http-transformation-plugin/sample-buffered-null-transformation-plugin.en.rst b/doc/sdk/http-transformation-plugin/sample-buffered-null-transformation-plugin.en.rst
index b9f6826a2de..866eb61aaa7 100644
--- a/doc/sdk/http-transformation-plugin/sample-buffered-null-transformation-plugin.en.rst
+++ b/doc/sdk/http-transformation-plugin/sample-buffered-null-transformation-plugin.en.rst
@@ -203,7 +203,7 @@ transform:
    vconnection:
 
    **Writing the Buffered Data to the Output Vconnection**
-   {#WritingBufferedtDataIntoVConnection)
+   {#WritingBufferedtDataIntoVConnection}
 
    .. figure:: /static/images/sdk/vconn_buf_output.jpg
       :alt: Writing the Buffered Data to the Output Vconnection