diff --git a/README.md b/README.md
index d630431..1b2fc5b 100644
--- a/README.md
+++ b/README.md
@@ -289,6 +289,7 @@ So don't update to Firefox 79 or use F-droid's [Fennec-release](https://f-droid.
 [Valor Econômico](https://valor.globo.com)*
 ##### Chile
 [El Mercurio](https://digital.elmercurio.com) -
+[El Mercurio de Valparaíso](https://www.mercuriovalpo.cl) -
 [La Segunda](https://digital.lasegunda.com) -
 [La Tercera](https://www.latercera.com)
 ##### Mexico
diff --git a/background.js b/background.js
index 78f749c..987b505 100644
--- a/background.js
+++ b/background.js
@@ -29,6 +29,7 @@ var allow_cookies = [
 'dn.se',
 'dvhn.nl',
 'elmercurio.com',
+'mercuriovalpo.cl',
 'eurekareport.com.au',
 'faz.net',
 'folha.uol.com.br',
@@ -184,6 +185,7 @@ var blockedRegexes = {
 'livemint.com': /(.+\.livemint\.com\/js\/localWorker\.js|analytics\.htmedia\.in\/analytics-js\/.+\.js)/,
 'lopinion.fr': /.+\.poool\.fr\/.+/,
 'lrb.co.uk': /.+\.tinypass\.com\/.+/,
+'mercuriovalpo.cl': /(.+\.mercuriovalpo\.cl\/impresa\/wp-content\/themes\/papel-digital-2019-desktop\/assets\/(vendor|\d)\.js|pram\.pasedigital\.cl\/API\/User\/Status\?)/,
 'modernhealthcare.com': /.+\.tinypass\.com\/.+/,
 'nationalgeographic.com': /.+\.blueconic\.net\/.+/,
 'nationalreview.com': /.+\.blueconic\.net\/.+/,
@@ -569,21 +571,24 @@ ext_api.webRequest.onBeforeSendHeaders.addListener(function(details) {
     });
   }
 
-  if (tabId !== -1) {
-    ext_api.tabs.get(tabId, function (currentTab) {
-      if (isSiteEnabled(currentTab) || medium_custom_domain) {
+  ext_api.tabs.query({
+    active: true,
+    currentWindow: true
+  }, function (tabs) {
+    if (tabs.length > 0 && tabs[0].url && tabs[0].url.indexOf("http") !== -1) {
+      if (isSiteEnabled({url: tabs[0].url}) || medium_custom_domain) {
         // run contentScript inside tab
-        ext_api.tabs.executeScript(tabId, {
+        ext_api.tabs.executeScript({
           file: 'contentScript.js',
           runAt: 'document_start'
-        }, function(res) {
+        }, function (res) {
           if (ext_api.runtime.lastError || res[0]) {
             return;
           }
         });
       }
-    });
-  }
+    }
+  });
 
   return { requestHeaders: requestHeaders };
 }, {
diff --git a/contentScript.js b/contentScript.js
index ef9f0e2..5e8fd2a 100644
--- a/contentScript.js
+++ b/contentScript.js
@@ -1011,6 +1011,17 @@ else if (matchDomain("limesonline.com")) {
     }, 500); // Delay (in milliseconds)
 }
 
+else if (matchDomain("mercuriovalpo.cl")) {
+    let content = document.querySelector('div.content');
+    if (content)
+        content.setAttribute('id', 'content_new');
+    let modal_wrapper = document.querySelector('div.modal-wrapper');
+    removeDOMElement(modal_wrapper);
+    let body_modal = document.querySelector('body.modal-open');
+    if (body_modal)
+        body_modal.classList.remove('modal-open');
+}
+
 // General Functions
 function removeDOMElement(...elements) {
     for (let element of elements) {
diff --git a/lp/manifest.json b/lp/manifest.json
index f2e37af..058c49d 100644
--- a/lp/manifest.json
+++ b/lp/manifest.json
@@ -159,6 +159,7 @@
         "*://*.lrb.co.uk/*",
         "*://*.mcall.com/*",
         "*://*.medium.com/*",
+        "*://*.mercuriovalpo.cl/*",
         "*://*.mercurynews.com/*",
         "*://*.mexiconewsdaily.com/*",
         "*://*.miamiherald.com/*",
diff --git a/sites.js b/sites.js
index 604d324..da7194c 100644
--- a/sites.js
+++ b/sites.js
@@ -38,6 +38,7 @@ var defaultSites =
   "Discover Magazine": "discovermagazine.com",
   "El Comercio": "elcomercio.pe",
   "El Mercurio": "elmercurio.com",
+  "El Mercurio de Valparaíso": "mercuriovalpo.cl",
   "El Mundo": "elmundo.es",
   "El País": "elpais.com",
   "Encyclopedia Britannica": "britannica.com",