diff --git a/libs/DauxHelper.php b/libs/DauxHelper.php
index bdd6aee..f82a685 100644
--- a/libs/DauxHelper.php
+++ b/libs/DauxHelper.php
@@ -30,7 +30,7 @@ class DauxHelper
             return;
         }
 
-        if (is_dir($params['themes_path'] . DIRECTORY_SEPARATOR . $params['html']['theme'])) {
+        if (is_dir(realpath(($params['themes_path'] . DIRECTORY_SEPARATOR . $params['html']['theme'])))) {
             return;
         }
 
@@ -43,7 +43,7 @@ class DauxHelper
                 $params['html']['theme'] = array_pop($theme);
         }
 
-        if (!is_dir($params['themes_path'] . DIRECTORY_SEPARATOR . $params['html']['theme'])) {
+        if (!is_dir(realpath(($params['themes_path'] . DIRECTORY_SEPARATOR . $params['html']['theme'])))) {
             throw new \RuntimeException("Theme '{$params['html']['theme']}' not found");
         }
     }