diff --git a/src/lib/storage/up-storage.js b/src/lib/storage/up-storage.js
index 4887bfc98..bfbaaf930 100644
--- a/src/lib/storage/up-storage.js
+++ b/src/lib/storage/up-storage.js
@@ -17,9 +17,7 @@ const encode = function(thing) {
 
 const jsonContentType = 'application/json';
 
-const contenTypeAccept = [
-  `${jsonContentType} q=0.8, */*`,
-].join(', ');
+const contenTypeAccept = `${jsonContentType} q=0.8, */*`;
 
 /**
  * Just a helper (`config[key] || default` doesn't work because of zeroes)