diff --git a/lib/gollum/sanitization.rb b/lib/gollum/sanitization.rb
index 8656cb52..40400b96 100644
--- a/lib/gollum/sanitization.rb
+++ b/lib/gollum/sanitization.rb
@@ -105,7 +105,7 @@ module Gollum
     attr_reader :transformers
 
     # Gets or sets a String prefix which is added to ID attributes.
-    # Default: 'wiki-'
+    # Default: ''
     attr_accessor :id_prefix
 
     # Gets a Hash describing HTML attributes that Sanitize should add.
@@ -128,7 +128,7 @@ module Gollum
       @add_attributes   = {}
       @remove_contents  = REMOVE_CONTENTS.dup
       @allow_comments   = false
-      @id_prefix        = 'wiki-'
+      @id_prefix        = ''
       yield self if block_given?
     end