diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5cd75c6..5174131 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,6 +32,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Updated Turkish translation by Ümit
 - Updated Chinese (traditional) translation by 1304274443
 - Updated Chinese (simplified) translation by Eric
+- Replaced deprecated `extension.getURL` by `runtime.getURL`
 
 ## [1.21.0] - 2021-03-24
 
diff --git a/_locales/pt_BR/messages.json b/_locales/pt_BR/messages.json
index 574b0f2..ee011fe 100644
--- a/_locales/pt_BR/messages.json
+++ b/_locales/pt_BR/messages.json
@@ -262,7 +262,13 @@
         "message": "Importa tudo"
     },
     "setting_log_limit_label": {
-        "message": "Limitar o registro (log) a $LIMIT$ itens."
+        "message": "Limitar o registro (log) a $LIMIT$ itens.",
+        "placeholders": {
+            "limit": {
+                "content": "$1",
+                "example": "100"
+            }
+        }
     },
     "blocked_html_title": {
         "message": "Este site foi bloqueado por <b>ClearURLs</b>"
@@ -280,7 +286,13 @@
         "message": "Permite marketing de referência (\"referral\")"
     },
     "watchdog": {
-        "message": "[ClearURLs]: O watchdog detectou um problema e já falhou $TIMES$ vezes."
+        "message": "[ClearURLs]: O watchdog detectou um problema e já falhou $TIMES$ vezes.",
+        "placeholders": {
+            "times": {
+                "content": "$1",
+                "example": "3"
+            }
+        }
     },
     "domain_blocking_enabled": {
         "message": "Permitir bloqueio de domínio (pode causar problemas em páginas que não permitem AdBlockers)"
diff --git a/_locales/pt_PT/messages.json b/_locales/pt_PT/messages.json
index aa47478..0508fbb 100644
--- a/_locales/pt_PT/messages.json
+++ b/_locales/pt_PT/messages.json
@@ -238,7 +238,13 @@
         "message": "Permite marketing com referências"
     },
     "watchdog": {
-        "message": "[ClearURLs]: o \"cão de vigia\" detetou um problema e já falhou $TIMES$ vezes.\n"
+        "message": "[ClearURLs]: o \"cão de vigia\" detetou um problema e já falhou $TIMES$ vezes.",
+        "placeholders": {
+            "times": {
+                "content": "$1",
+                "example": "3"
+            }
+        }
     },
     "domain_blocking_enabled": {
         "message": "Permitir o bloqueio de domínios (pode causar problemas em páginas que não permitem bloqueadores de anúncios)"
diff --git a/clearurls.js b/clearurls.js
index ef3437a..cd34fba 100644
--- a/clearurls.js
+++ b/clearurls.js
@@ -654,7 +654,7 @@ function start() {
                 */
                 if (result.cancel) {
                     if (request.type === 'main_frame') {
-                        const blockingPage = browser.extension.getURL("html/siteBlockedAlert.html?source=" + encodeURIComponent(request.url));
+                        const blockingPage = browser.runtime.getURL("html/siteBlockedAlert.html?source=" + encodeURIComponent(request.url));
                         browser.tabs.update(request.tabId, {url: blockingPage}).catch(handleError);
 
                         return {cancel: true};
diff --git a/core_js/log.js b/core_js/log.js
index 429ec92..f9bb244 100644
--- a/core_js/log.js
+++ b/core_js/log.js
@@ -93,7 +93,7 @@ function getDataTableTranslation()
 {
     let lang = browser.i18n.getUILanguage();
     lang = lang.substring(0,2);
-    return browser.extension.getURL('./external_js/dataTables/i18n/' + lang + '.lang');
+    return browser.runtime.getURL('./external_js/dataTables/i18n/' + lang + '.lang');
 }
 
 /**
diff --git a/core_js/popup.js b/core_js/popup.js
index 8818632..867820f 100644
--- a/core_js/popup.js
+++ b/core_js/popup.js
@@ -196,9 +196,9 @@ function resetGlobalCounter(){
             changeSwitchButton("tabcounter", "badgedStatus");
             changeSwitchButton("logging", "loggingStatus");
             changeSwitchButton("statistics", "statisticsStatus");
-            document.getElementById('loggingPage').href = browser.extension.getURL('./html/log.html');
-            document.getElementById('settings').href = browser.extension.getURL('./html/settings.html');
-            document.getElementById('cleaning_tools').href = browser.extension.getURL('./html/cleaningTool.html');
+            document.getElementById('loggingPage').href = browser.runtime.getURL('./html/log.html');
+            document.getElementById('settings').href = browser.runtime.getURL('./html/settings.html');
+            document.getElementById('cleaning_tools').href = browser.runtime.getURL('./html/cleaningTool.html');
             setText();
         });
 })();