diff --git a/_config.yml b/_config.yml
index dfe5d19..5b63a36 100644
--- a/_config.yml
+++ b/_config.yml
@@ -151,8 +151,6 @@ sidebar:
   padding: 18
   # Sidebar offset from top menubar in pixels (only for Pisces | Gemini).
   offset: 12
-  # Enable sidebar on narrow view (only for Muse | Mist).
-  onmobile: false
 
 # Sidebar Avatar
 avatar:
diff --git a/source/css/_common/outline/sidebar/sidebar-toggle.styl b/source/css/_common/outline/sidebar/sidebar-toggle.styl
index d49b50d..795c75f 100644
--- a/source/css/_common/outline/sidebar/sidebar-toggle.styl
+++ b/source/css/_common/outline/sidebar/sidebar-toggle.styl
@@ -11,10 +11,6 @@
 
   +tablet-mobile() {
     opacity: $b2t-opacity-hover;
-
-    if (!hexo-config('sidebar.onmobile')) {
-      display: none;
-    }
   }
 }
 
diff --git a/source/css/_common/outline/sidebar/sidebar.styl b/source/css/_common/outline/sidebar/sidebar.styl
index d2660fd..5cc0226 100644
--- a/source/css/_common/outline/sidebar/sidebar.styl
+++ b/source/css/_common/outline/sidebar/sidebar.styl
@@ -6,12 +6,6 @@
   }
   position: fixed;
   top: 0;
-
-  +tablet-mobile() {
-    if (!hexo-config('sidebar.onmobile')) {
-      display: none;
-    }
-  }
 }
 
 .sidebar-inner {