Added change log item for bug #608
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 2bfae3f..c4fbb67 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -64,6 +64,7 @@
 -  Bug #419 - auto_link() now recognizes URLs that come after a word boundary.
 -  Bug #724 - is_unique in form validation now checks that you are connected to a database.
 -  Bug #647 - _get_mod_time() in Zip library no longer generates stat failed errors
+-  Bug #608 - Fixes an issue with the Image_lib class not clearing properties completely
 
 Version 2.1.0
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