diff --git a/lib/redmine.rb b/lib/redmine.rb
index d88a69d51..724f12a84 100644
--- a/lib/redmine.rb
+++ b/lib/redmine.rb
@@ -13,7 +13,7 @@ require 'redmine/wiki_formatting'
 require 'redmine/scm/base'
 
 begin
-  require_library_or_gem 'RMagick' unless Object.const_defined?(:Magick)
+  require 'RMagick' unless Object.const_defined?(:Magick)
 rescue LoadError
   # RMagick is not available
 end