diff --git a/lib/smartcropper.rb b/lib/smartcropper.rb
index f0eb943..bf06aa7 100644
--- a/lib/smartcropper.rb
+++ b/lib/smartcropper.rb
@@ -1,4 +1,4 @@
-require 'RMagick'
+require 'rmagick'
 class SmartCropper
   include Magick