diff --git a/app/models/upload.rb b/app/models/upload.rb
index ae7b22c29..b97bb7839 100644
--- a/app/models/upload.rb
+++ b/app/models/upload.rb
@@ -57,7 +57,7 @@ class Upload < ApplicationRecord
     end
 
     def validate_video_duration(record)
-      if !record.uploader.is_admin? && record.file.is_video? && record.file.duration > MAX_VIDEO_DURATION
+      if !record.uploader.is_admin? && record.file.is_video? && record.file.duration.to_i > MAX_VIDEO_DURATION
         record.errors.add(:base, "video must not be longer than #{MAX_VIDEO_DURATION.seconds.inspect}")
       end
     end