diff --git a/plugins/calendar/README b/plugins/calendar/README
index 758fb1bb..025be65d 100644
--- a/plugins/calendar/README
+++ b/plugins/calendar/README
@@ -72,7 +72,10 @@ Add 'calendar' to the list of active plugins:
 IMPORTANT
 ---------
 
-This plugin doesn't work with the classic skin of Roundcube because no
+This plugin doesn't work with the Classic skin of Roundcube because no
 templates are available for that skin.
 
+Use Roundcube `skins_allowed` option to limit skins available to the user
+or remove incompatible skins from the skins folder.
+
 [1] https://git.kolab.org/diffusion/RPK/
diff --git a/plugins/libkolab/README b/plugins/libkolab/README
index e30ab030..a4afe326 100644
--- a/plugins/libkolab/README
+++ b/plugins/libkolab/README
@@ -6,7 +6,7 @@ and manage the access to the Kolab groupware objects stored in various
 IMAP folders. For reading and writing these objects, the PHP bindings of
 the libkolabxml library are used.
 
-This plugin also provides elastic/larry skin support for Kolab plugins.
+This plugin also provides Elastic/Larry skin support for Kolab plugins.
 
 
 REQUIREMENTS
@@ -33,5 +33,8 @@ For available configuration options see config.inc.php.dist file.
 IMPORTANT
 ---------
 
-This plugin doesn't work with the classic skin of Roundcube because no
-templates are available for that skin.
\ No newline at end of file
+This plugin doesn't work with the Classic skin of Roundcube because no
+templates are available for that skin.
+
+Use Roundcube `skins_allowed` option to limit skins available to the user
+or remove incompatible skins from the skins folder.
diff --git a/plugins/tasklist/README b/plugins/tasklist/README
index 2bb7c3d8..5465b0d9 100644
--- a/plugins/tasklist/README
+++ b/plugins/tasklist/README
@@ -62,5 +62,8 @@ Add 'tasklist' to the list of active plugins:
 IMPORTANT
 ---------
 
-This plugin doesn't work with the classic skin of Roundcube because no
+This plugin doesn't work with the Classic skin of Roundcube because no
 templates are available for that skin.
+
+Use Roundcube `skins_allowed` option to limit skins available to the user
+or remove incompatible skins from the skins folder.