diff --git a/src/cloud/ec2/lib/EC2QueryServer.rb b/src/cloud/ec2/lib/EC2QueryServer.rb
index e93e06b66e..03e7f44ecf 100644
--- a/src/cloud/ec2/lib/EC2QueryServer.rb
+++ b/src/cloud/ec2/lib/EC2QueryServer.rb
@@ -318,7 +318,7 @@ private
     end
 
     def render_launch_time(vm)
-        return "<launchTime>#{Time.at(vm[:stime].to_i).xmlschema}</launchTime>"
+        return "<launchTime>#{Time.at(vm["STIME"].to_i).xmlschema}</launchTime>"
     end
 end