diff --git a/fighter/config/zipline/zipline.env b/fighter/config/zipline/zipline.env
index 57ad032..32994ee 100644
--- a/fighter/config/zipline/zipline.env
+++ b/fighter/config/zipline/zipline.env
@@ -6,7 +6,7 @@ CORE_RETURN_HTTPS=true
 CORE_HOST=0.0.0.0
 CORE_PORT=3000
 CORE_LOGGER=true
-UPLOADER_ASSUME_MIMETYPE=true
+UPLOADER_ASSUME_MIMETYPES=true
 
 # Configured secret variables 
 #CORE_DATABASE_URL # follows the structure postgresql://[user[:password]@][netloc][:port][/dbname]