diff --git a/base/univention-lib/debian/python-univention-lib.postinst b/base/univention-lib/debian/python-univention-lib.postinst
index eda6bc7baa..05f521aded 100644
--- a/base/univention-lib/debian/python-univention-lib.postinst
+++ b/base/univention-lib/debian/python-univention-lib.postinst
@@ -60,7 +60,7 @@ else:
 		for path in attr.get('univentionSharePath', []):
 			directory = os.path.realpath(path)
 			if univention.lib.listenerSharePath.is_blacklisted(directory, ucr):
-				print('WARNING: the path %s for share %s matches a blacklisted path: You should execute: ucr set listener/shares/whitelist/%s=%s' % (path, dn, pipes.quote(univention.uldap.explodeDn(dn, True)[0]), pipes.quote(directory)))
+				print('WARNING: the path %s for share %s matches a blacklisted path: You should execute: "ucr set listener/shares/whitelist/%s=%s" and then restart univention-directory-listener.' % (path, dn, pipes.quote(univention.uldap.explodeDn(dn, True)[0]), pipes.quote(directory)))
 EOL
 
 fi
diff --git a/base/univention-lib/debian/python-univention-lib.univention-config-registry-variables b/base/univention-lib/debian/python-univention-lib.univention-config-registry-variables
index 00b9527eda..9e8672e624 100644
--- a/base/univention-lib/debian/python-univention-lib.univention-config-registry-variables
+++ b/base/univention-lib/debian/python-univention-lib.univention-config-registry-variables
@@ -12,8 +12,8 @@ Type=str
 Categories=service-misc
 
 [listener/shares/whitelist/.*]
-Description[de]=Standardmäßig wird die Erstellung von Freigaben für einige Systemverzeichnisse verhindert. Diese Variablen ermöglichen das Freigeben von Verzeichnissen, die sonst auf der Standard-Blackist stehen. Die Werte der Variablen können eine durch Doppelpunkte separierte Liste von erlaubten Verzeichnissen enthalten (z.B. /var/*:/usr/*). Die Variable listener/shares/whitelist/default liefert eine empfohlene Standardliste für UCS.
-Description[en]=For security reasons creating shares for some system directories is denied by default. This family of variables allows overriding the default blacklist. The values may contain a colon separated list of allowed directories (e.g. /var/*:/usr/*). The variable listener/shares/whitelist/default specifies the UCS recommended default whitelist.
+Description[de]=Standardmäßig wird die Erstellung von Freigaben für einige Systemverzeichnisse verhindert. Diese Variablen ermöglichen das Freigeben von Verzeichnissen, die sonst auf der Standard-Blackist stehen. Die Werte der Variablen können eine durch Doppelpunkte separierte Liste von erlaubten Verzeichnissen enthalten (z.B. /var/*:/usr/*). Die Variable listener/shares/whitelist/default liefert eine empfohlene Standardliste für UCS. Nach Änderung der Variablen muss univention-directory-listener neu gestartet werden.
+Description[en]=For security reasons creating shares for some system directories is denied by default. This family of variables allows overriding the default blacklist. The values may contain a colon separated list of allowed directories (e.g. /var/*:/usr/*). The variable listener/shares/whitelist/default specifies the UCS recommended default whitelist. After changing the variables univention-directory-listener needs to be restarted.
 Type=str
 Categories=service-misc
 
diff --git a/base/univention-lib/python/listenerSharePath.py b/base/univention-lib/python/listenerSharePath.py
index 843f683256..a4b3556da3 100644
--- a/base/univention-lib/python/listenerSharePath.py
+++ b/base/univention-lib/python/listenerSharePath.py
@@ -172,9 +172,9 @@ def createOrRename(old, new, cr):
 
 		# check blacklist
 		if is_blacklisted(newPath, cr):
-			return "%r as destination for renaming not allowed! WARNING: the path %r for the share %r matches a blacklisted path. The whitelist can be extended via the URC variables listener/shares/whitelist/." % (newPath, newPath, share_name)
+			return "%r as destination for renaming not allowed! WARNING: the path %r for the share %r matches a blacklisted path. The whitelist can be extended via the URC variables listener/shares/whitelist/. After changing the variables univention-directory-listener needs to be restartet." % (newPath, newPath, share_name)
 		if is_blacklisted(oldPath, cr):
-			return "%r as source for renaming not allowed! WARNING: the path %r for the share %r matches a blacklisted path. The whitelist can be extended via the URC variables listener/shares/whitelist/." % (oldPath, newPath, share_name)
+			return "%r as source for renaming not allowed! WARNING: the path %r for the share %r matches a blacklisted path. The whitelist can be extended via the URC variables listener/shares/whitelist/. After changing the variables univention-directory-listener needs to be restartet." % (oldPath, newPath, share_name)
 
 		# check mount point
 		for i in [oldPath, newPath]: