diff --git a/application/forms/PreferenceForm.php b/application/forms/PreferenceForm.php
index 7fd9b02d0..b9770f5de 100644
--- a/application/forms/PreferenceForm.php
+++ b/application/forms/PreferenceForm.php
@@ -247,6 +247,9 @@ class PreferenceForm extends Form
             ]
         );
 
+        // Temporarily disabled. Re-enabled with v2.10
+        $this->removeElement('theme_mode');
+
         /** @var GettextTranslator $translator */
         $translator = StaticTranslator::$instance;
 
diff --git a/library/Icinga/Web/StyleSheet.php b/library/Icinga/Web/StyleSheet.php
index 53b56bd14..a8a03168a 100644
--- a/library/Icinga/Web/StyleSheet.php
+++ b/library/Icinga/Web/StyleSheet.php
@@ -175,6 +175,9 @@ class StyleSheet
             }
         }
 
+        // Temporarily disabled. Re-enabled with v2.10
+        $mode = 'none';
+
         $this->lessCompiler->setThemeMode($this->pubPath . '/css/modes/'. $mode . '.less');
     }