diff --git a/src/cloud/ec2/lib/EC2QueryClient.rb b/src/cloud/ec2/lib/EC2QueryClient.rb
index 25e855b23f..5a1351f6df 100644
--- a/src/cloud/ec2/lib/EC2QueryClient.rb
+++ b/src/cloud/ec2/lib/EC2QueryClient.rb
@@ -174,7 +174,7 @@ module EC2QueryClient
                     'application/octet-stream', file_name)
 
                 req = Net::HTTP::Post::Multipart.new('/', params)
-                res = http_start(@uri) do |http|
+                res = CloudClient.http_start(@uri) do |http|
                     http.request(req)
                 end