diff --git a/lib/image_optim/image_path.rb b/lib/image_optim/image_path.rb
index 92e0b02b..8bda7ad1 100644
--- a/lib/image_optim/image_path.rb
+++ b/lib/image_optim/image_path.rb
@@ -43,6 +43,7 @@ def replace(src)
         src.copy(temp)
         temp.write(read)
         temp.rename(src.to_s)
+        unlink
       end
     end