Clarified Changelog for fix #602
diff --git a/ChangeLog b/ChangeLog
index 7782470..82bbff4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -46,7 +46,7 @@
      data structure until after error checks are successful. Found by
      subramanyam-c.
    * Fix documentation and implementation missmatch for function arguments of
-     mbedtls_gcm_finish(). Found by cmiatpaar.
+     mbedtls_gcm_finish(). Found by cmiatpaar. #602
 
 Changes
    * Extended test coverage of special cases, and added new timing test suite.