diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c
index 6f28047..096bdde 100644
--- a/src/backend/nodes/readfuncs.c
+++ b/src/backend/nodes/readfuncs.c
@@ -2230,7 +2230,7 @@ _readExtensibleNode(void)
 	const char	   *extnodename;
 	READ_TEMP_LOCALS();
 
-	token = pg_strtok(&length);		/* skip: extnodename */
+	token = pg_strtok(&length);		/* skip :extnodename */
 	token = pg_strtok(&length);		/* get extnodename */
 
 	extnodename = nullable_string(token, length);