diff --git a/lib/paperclip/media_type_spoof_detector_extensions.rb b/lib/paperclip/media_type_spoof_detector_extensions.rb
index 363934d8d..43337cc68 100644
--- a/lib/paperclip/media_type_spoof_detector_extensions.rb
+++ b/lib/paperclip/media_type_spoof_detector_extensions.rb
@@ -18,7 +18,7 @@ module Paperclip
       @type_from_mime_magic ||= begin
         begin
           File.open(@file.path) do |file|
-            MimeMagic.by_magic(file)&.type
+            MimeMagic.by_magic(file)&.type || ''
           end
         rescue Errno::ENOENT
           ''