diff --git a/plugins/backtick_code_block.rb b/plugins/backtick_code_block.rb
index 6243de6fd3b..40e7900b540 100644
--- a/plugins/backtick_code_block.rb
+++ b/plugins/backtick_code_block.rb
@@ -10,7 +10,7 @@ def render_code_block(input)
     @lang = nil
     @url = nil
     @title = nil
-    input.gsub /^`{3} *([^\n]+)?\n(.+?)\n`{3}/m do
+    input.gsub(/^`{3} *([^\n]+)?\n(.+?)\n`{3}/m) do
       @options = $1 || ''
       str = $2
 
@@ -22,8 +22,8 @@ def render_code_block(input)
         @caption = "<figcaption><span>#{$2}</span></figcaption>"
       end
 
-      if str.match(/\A {4}/)
-        str = str.gsub /^ {4}/, ''
+      if str.match(/\A( {4}|\t)/)
+        str = str.gsub(/^( {4}|\t)/, '')
       end
       if @lang.nil? || @lang == 'plain'
         code = tableize_code(str.gsub('<','&lt;').gsub('>','&gt;'))