--- a/browser/components/search/searchplugins/chambers-en-GB.xml
+++ b/browser/components/search/searchplugins/chambers-en-GB.xml
@@ -2,14 +2,14 @@
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
 
 <SearchPlugin xmlns="http://www.mozilla.org/2006/browser/search/">
 <ShortName>Chambers (UK)</ShortName>
 <Description>Chambers 21st Century Dictionary Search</Description>
 <InputEncoding>UTF-8</InputEncoding>
 <Image width="16" height="16">data:image/x-icon;base64,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</Image>
-<Url type="text/html" method="GET" template="http://www.chambers.co.uk/search/" resultdomain="chambers.co.uk" rel="searchform">
+<Url type="text/html" method="GET" template="https://chambers.co.uk/search/" resultdomain="chambers.co.uk" rel="searchform">
   <Param name="query" value="{searchTerms}"/>
   <Param name="title" value="21st"/>
   <Param name="sourceid" value="Mozilla-search"/>
 </Url>
 </SearchPlugin>