diff --git a/src/Miscellaneous/Keybinds.coffee b/src/Miscellaneous/Keybinds.coffee
index 6542b4f78..7dc4c1478 100644
--- a/src/Miscellaneous/Keybinds.coffee
+++ b/src/Miscellaneous/Keybinds.coffee
@@ -253,12 +253,14 @@ Keybinds =
     QR.nodes.com.focus()
 
   tags: (tag, ta) ->
-    supported = switch tag
-      when 'spoiler'     then !!$ '.postForm input[name=spoiler]'
-      when 'code'        then g.BOARD.ID is 'g'
-      when 'math', 'eqn' then g.BOARD.ID is 'sci'
-      when 'sjis'        then g.BOARD.ID is 'jp'
-    new Notice 'warning', "[#{tag}] tags are not supported on /#{g.BOARD}/.", 20 unless supported
+    BoardConfig.ready ->
+      {config} = g.BOARD
+      supported = switch tag
+        when 'spoiler'     then !!config.spoilers
+        when 'code'        then !!config.code_tags
+        when 'math', 'eqn' then !!config.math_tags
+        when 'sjis'        then !!config.sjis_tags
+      new Notice 'warning', "[#{tag}] tags are not supported on /#{g.BOARD}/.", 20 unless supported
 
     value    = ta.value
     selStart = ta.selectionStart
diff --git a/src/Posting/QR.coffee b/src/Posting/QR.coffee
index c19b36dee..e06bcbfb6 100644
--- a/src/Posting/QR.coffee
+++ b/src/Posting/QR.coffee
@@ -31,7 +31,7 @@ QR =
     version = if Conf['Use Recaptcha v1'] and Main.jsEnabled then 'v1' else 'v2'
     @captcha = Captcha[version]
 
-    $.on d, '4chanXInitFinished', @initReady
+    $.on d, '4chanXInitFinished', -> BoardConfig.ready QR.initReady
 
     Callbacks.Post.push
       name: 'Quick Reply'
@@ -53,7 +53,6 @@ QR =
     Header.addShortcut 'qr', sc, 540
 
   initReady: ->
-    $.off d, '4chanXInitFinished', @initReady
     QR.postingIsEnabled = !!$.id 'postForm'
     return unless QR.postingIsEnabled
 
@@ -483,16 +482,15 @@ QR =
     if Conf['Show New Thread Option in Threads']
       $.addClass QR.nodes.el, 'show-new-thread-option'
 
+    {config}      = g.BOARD
+    {classList}   = QR.nodes.el
     QR.forcedAnon = !!$ 'form[name="post"] input[name="name"][type="hidden"]'
-    if QR.forcedAnon
-      $.addClass QR.nodes.el, 'forced-anon'
-
-    QR.spoiler = !!$ '.postForm input[name=spoiler]'
-    if QR.spoiler
-      $.addClass QR.nodes.el, 'has-spoiler'
-
-    if g.BOARD.ID is 'jp' and Conf['sjisPreview']
-      $.addClass QR.nodes.el, 'sjis-preview'
+    QR.spoiler    = !!config.spoilers
+    classList.toggle 'forced-anon',  QR.forcedAnon
+    classList.toggle 'has-spoiler',  QR.spoiler
+    classList.toggle 'has-sjis',     !!config.sjis_tags
+    classList.toggle 'has-math',     !!config.math_tags
+    classList.toggle 'sjis-preview', !!config.sjis_tags and Conf['sjisPreview']
 
     if parseInt(Conf['customCooldown'], 10) > 0
       $.addClass QR.nodes.fileSubmit, 'custom-cooldown'
diff --git a/src/css/style.css b/src/css/style.css
index 4799ce273..50d7fa1d3 100644
--- a/src/css/style.css
+++ b/src/css/style.css
@@ -1314,8 +1314,8 @@ input[name="Default Volume"] {
 #qr.reply-to-thread input[data-name="sub"]:not(.force-show),
 body:not(.board_f) #qr select[name="filetag"],
 #qr.reply-to-thread select[name="filetag"],
-body:not(.board_jp) #sjis-toggle,
-body:not(.board_sci) #tex-preview-button,
+#qr:not(.has-sjis) #sjis-toggle,
+#qr:not(.has-math) #tex-preview-button,
 #qr.tex-preview .textarea > :not(#tex-preview),
 #qr:not(.tex-preview) #tex-preview {
   display: none;