diff --git a/libs/daux.php b/libs/daux.php
index a1952a1..b22d523 100644
--- a/libs/daux.php
+++ b/libs/daux.php
@@ -198,8 +198,7 @@
                     $params['error_type'] = ErrorPage::NORMAL_ERROR_TYPE;
                     $params['index_key'] = 'index';
                     $params['docs_path'] = $this->docs_path;
-                    $protocol = ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') || $_SERVER['SERVER_PORT'] == 443) ?
-                        'https://' : 'http://';
+                    $protocol = '//';
                     $params['base_url'] = $protocol . $this->base_url . '/';
                     $params['base_page'] = $params['base_url'];
                     $params['host'] = $this->host;
@@ -228,8 +227,7 @@
                 case Daux::LIVE_MODE:
                     $params['docs_path'] = $this->docs_path;
                     $params['index_key'] = 'index';
-                    $protocol = ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') || $_SERVER['SERVER_PORT'] == 443) ?
-                        'https://' : 'http://';
+                    $protocol = '//';
                     $params['base_url'] = $protocol . $this->base_url . '/';
                     $params['base_page'] = $params['base_url'];
                     $params['host'] = $this->host;
diff --git a/themes/daux-blue.thm b/themes/daux-blue.thm
index cd61bae..10fc3fe 100644
--- a/themes/daux-blue.thm
+++ b/themes/daux-blue.thm
@@ -1,7 +1,7 @@
 {
     "favicon": "<base_url>themes/daux-blue/img/favicon-blue.png",
     "css": ["<base_url>themes/daux-blue/css/daux-blue.css"],
-    "fonts": ["http://fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
+    "fonts": ["//fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
     "js": [],
     "require-jquery": true,
     "bootstrap-js": false
diff --git a/themes/daux-green.thm b/themes/daux-green.thm
index a2a47de..b679f0c 100644
--- a/themes/daux-green.thm
+++ b/themes/daux-green.thm
@@ -1,7 +1,7 @@
 {
     "favicon": "<base_url>themes/daux-green/img/favicon-green.png",
     "css": ["<base_url>themes/daux-green/css/daux-green.css"],
-    "fonts": ["http://fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
+    "fonts": ["//fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
     "js": [],
     "require-jquery": true,
     "bootstrap-js": false
diff --git a/themes/daux-navy.thm b/themes/daux-navy.thm
index 36488c9..aecc385 100644
--- a/themes/daux-navy.thm
+++ b/themes/daux-navy.thm
@@ -1,7 +1,7 @@
 {
     "favicon": "<base_url>themes/daux-navy/img/favicon-navy.png",
     "css": ["<base_url>themes/daux-navy/css/daux-navy.css"],
-    "fonts": ["http://fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
+    "fonts": ["//fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
     "js": [],
     "require-jquery": true,
     "bootstrap-js": false
diff --git a/themes/daux-red.thm b/themes/daux-red.thm
index df89b67..1cbb8ad 100644
--- a/themes/daux-red.thm
+++ b/themes/daux-red.thm
@@ -1,7 +1,7 @@
 {
     "favicon": "<base_url>themes/daux-red/img/favicon-red.png",
     "css": ["<base_url>themes/daux-red/css/daux-red.css"],
-    "fonts": ["http://fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
+    "fonts": ["//fonts.googleapis.com/css?family=Roboto+Slab:400,100,300,700&subset=latin,cyrillic-ext,cyrillic"],
     "js": [],
     "require-jquery": true,
     "bootstrap-js": false