diff --git a/docbow_project/docbow/utils.py b/docbow_project/docbow/utils.py
index 2e1a122..bcf92ab 100644
--- a/docbow_project/docbow/utils.py
+++ b/docbow_project/docbow/utils.py
@@ -34,7 +34,7 @@ def file_match_mime_types(file_like, mime_types):
 
     if not mime_types:
         return True
-    mime_type = magic.from_buffer(file_like.read(10024), mime=True)
+    mime_type = magic.from_buffer(file_like.read(), mime=True)
     return match_mime_types(mime_type, mime_types)