diff --git a/CHANGELOG.md b/CHANGELOG.md
index cac5420..58b46e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,7 +19,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Removed
 
-* Remove Ubuntu font (use system font)
+* Ubuntu font (use system font instead)
+* OpenSearch plugin (because LibreQR is not a search engine)
 
 ## 1.3.0 - 2020-11-03
 
diff --git a/README.md b/README.md
index 87a2ba0..0866f0b 100755
--- a/README.md
+++ b/README.md
@@ -10,9 +10,6 @@ A LibreQR instance is available at <https://qr.antopie.org>.
 
 ## How it works
 
-LibreQR includes an [OpenSearch](https://developer.mozilla.org/docs/Web/OpenSearch) plugin, which allows to add it as a search engine in Firefox and to save settings.
-You can thus generate a QR code directly from your search bar with the LibreQR's settings used at the time of adding as search engine.
-
 A [WebManifest](https://developer.mozilla.org/docs/Web/Manifest) is also included, which allows better system integration using  Fennec (Firefox Android) ou Chromium.
 
 QR codes generated are located in the temp/ directory, named with the number of random characters set in config.inc.php (32 by default), and then deleted after the time set in config.inc.php (2 days by default).
diff --git a/README_fr.md b/README_fr.md
index d470fb1..0b0e0fb 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -10,9 +10,6 @@ Une instance de LibreQR est disponible sur <https://qr.antopie.org>.
 
 ## Fonctionnement
 
-LibreQR inclus un plugin [OpenSearch](https://developer.mozilla.org/docs/Web/OpenSearch), ce qui permet de l'ajouter comme moteur de recherche dans Firefox et de sauvegarder vos paramètres.
-Vous pouvez ainsi générer un code QR directement depuis la barre de recherche avec les réglages de LibreQR utilisés lors de l'ajout comme moteur de recherche.
-
 Un [WebManifest](https://developer.mozilla.org/docs/Web/Manifest) est également inclus, ce qui permet de mieux l'intégrer au système via Fennec (Firefox Android) ou Chromium.
 
 Les codes QR générés sont placés dans le dossier temp/, nommés avec le nombre de caractères aléatoires indiqué dans config.inc.php (32 par défaut), puis supprimés après le temps indiqué dans config.inc.php (2 jours par défaut).
diff --git a/index.php b/index.php
index cef42ad..8f95e50 100755
--- a/index.php
+++ b/index.php
@@ -75,7 +75,6 @@ if (
     <meta name="referrer" content="no-referrer">
     <meta http-equiv="Content-Security-Policy" content="default-src 'none'; img-src 'self' data:; style-src 'self'; manifest-src 'self'; form-action 'self';">
     <link rel="manifest" href="manifest.php">
-    <link rel="search" type="application/opensearchdescription+xml" title="LibreQR" href="opensearch.php&#63;redundancy=<?= $params['redundancy'] ?>&amp;margin=<?= $params['margin'] ?>&amp;size=<?= $params['size'] ?>&amp;bgColor=<?= urlencode($params['bgColor']) ?>&amp;mainColor=<?= urlencode($params['mainColor']) ?>">
     <?php
     require_once "less.php/lib/Less/Autoloader.php";
     Less_Autoloader::register();
diff --git a/opensearch.php b/opensearch.php
deleted file mode 100755
index b9a80e5..0000000
--- a/opensearch.php
+++ /dev/null
@@ -1,35 +0,0 @@
-<?php // This file is part of LibreQR, which is distributed under the GNU AGPLv3+ license
-require "inc.php"; ?>
-<?xml version="1.0" encoding="UTF-8" ?>
-<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
-  <ShortName>LibreQR</ShortName>
-  <Description><?= $loc['description'] ?></Description>
-<?php
-  foreach($themeDimensionsIcons as $dimIcon) {
-    echo '  <Image height="' . $dimIcon . '" width="' . $dimIcon . '" type="image/png">' . $rootPath . 'themes/' . $theme . '/icons/' . $dimIcon . '.png</Image>' . "\n";
-  } ?>
-  <Language>*</Language>
-  <InputEncoding>UTF-8</InputEncoding>
-<?php
-  $redundancy = htmlspecialchars((isset($_GET['redundancy'])) ? $_GET['redundancy'] : DEFAULT_REDUNDANCY);
-  $margin = htmlspecialchars((isset($_GET['margin'])) ? $_GET['margin'] : DEFAULT_MARGIN);
-  $size = htmlspecialchars((isset($_GET['size'])) ? $_GET['size'] : DEFAULT_SIZE);
-  $bgColor = htmlspecialchars(urlencode((isset($_GET['bgColor'])) ? $_GET['bgColor'] : "%23" . DEFAULT_BGCOLOR));
-  $mainColor = htmlspecialchars(urlencode((isset($_GET['mainColor'])) ? $_GET['mainColor'] : "%23" . DEFAULT_MAINCOLOR));
-?>
-  <Url type="text/html" method="post" template="<?= $rootPath ?>">
-    <Param name="txt" value="{searchTerms}"/>
-    <Param name="redundancy" value="<?= $redundancy ?>"/>
-    <Param name="margin" value="<?= $margin ?>"/>
-    <Param name="size" value="<?= $size ?>"/>
-    <Param name="bgColor" value="<?= $bgColor ?>"/>
-    <Param name="mainColor" value="<?= $mainColor ?>"/>
-  </Url>
-  <Url type="application/opensearchdescription+xml" rel="self" template="<?= $rootPath ?>opensearch.php">
-    <Param name="redundancy" value="<?= $redundancy ?>"/>
-    <Param name="margin" value="<?= $margin ?>"/>
-    <Param name="size" value="<?= $size ?>"/>
-    <Param name="bgColor" value="<?= $bgColor ?>"/>
-    <Param name="mainColor" value="<?= $mainColor ?>"/>
-  </Url>
-</OpenSearchDescription>