diff --git a/Products/zms/__init__.py b/Products/zms/__init__.py
index 783a79418..78c8e9deb 100644
--- a/Products/zms/__init__.py
+++ b/Products/zms/__init__.py
@@ -256,7 +256,8 @@ def initialize(context):
             # a. write it into separate file and
             # b. create a configuration parameter
             min_fileobj = open(fileobj.name, 'r')
-            min_hash = standard.encrypt_password(min_fileobj.read(),hex=True)
+            min_fileobj_content = min_fileobj.read()
+            min_hash = str(hash(min_fileobj_content))
             min_hash_fileobj = open(fileobj.name + '.hash', 'w')
             min_hash_fileobj.write(min_hash)
             OFS.misc_.misc_.zms['confdict']['js_min.hash'] = min_hash
diff --git a/Products/zms/zpt/common/zmi_html_head.zpt b/Products/zms/zpt/common/zmi_html_head.zpt
index 6e4c1d197..c84bdf247 100644
--- a/Products/zms/zpt/common/zmi_html_head.zpt
+++ b/Products/zms/zpt/common/zmi_html_head.zpt
@@ -28,7 +28,7 @@
 	<script type="text/javascript" charset="UTF-8" tal:attributes="src python:'/++resource++zms_/i18n/%s.js'%here.get_manage_lang()"></script>
 	<tal:block tal:repeat="src python:list(zmi_paths['js_paths'])+[here.getConfProperty(x) for x in here.getConfProperty('bootstrap.libs').split(',')]"
 		><script type="text/javascript" charset="UTF-8" tal:condition="src" 
-			tal:attributes="src python:src.endswith('-all.min.js') and '%s?cache=%s'%(src,here.getConfProperty('js_min.hash')) or src">
+			tal:attributes="src python:src.endswith('-all.min.js') and '%s?hash=%s'%(src,here.getConfProperty('js_min.hash')) or src">
 		</script>
 	</tal:block>
 	<script tal:condition="python:here.restrictedTraverse(zmi_js, None)" tal:attributes="src zmi_js" type="text/javascript" charset="UTF-8" defer="defer"></script>