1 files changed, 1 insertions, 4 deletions
diff --git a/lib/redmine/thumbnail.rb b/lib/redmine/thumbnail.rb
index cc9656b3e..f9db6c93f 100644
--- a/lib/redmine/thumbnail.rb
+++ b/lib/redmine/thumbnail.rb
@@ -33,15 +33,12 @@ module Redmine
       return nil unless convert_available?
       return nil if is_pdf && !gs_available?
       unless File.exists?(target)
+        # Make sure we only invoke Imagemagick if the file type is allowed
         mime_type = File.open(source) {|f| MimeMagic.by_magic(f).try(:type) }
         return nil if mime_type.nil?
         return nil if !ALLOWED_TYPES.include? mime_type
         return nil if is_pdf && mime_type != "application/pdf"
 
-        # Make sure we only invoke Imagemagick if the file type is allowed
-        unless File.open(source) {|f| ALLOWED_TYPES.include? MimeMagic.by_magic(f).try(:type) }
-          return nil
-        end
         directory = File.dirname(target)
         unless File.exists?(directory)
           FileUtils.mkdir_p directory