--- orig-096/src/command_throttle.cc	2015-09-03 21:03:30.000000000 +0200
+++ rtorrent-0.9.6/src/command_throttle.cc	2017-04-27 05:17:31.000000000 +0200
@@ -98,8 +98,10 @@
 
+  if (argItr == args.end())
+    throw torrent::input_error("Missing throttle name.");
   const std::string& name = argItr->as_string();
   if (name.empty() || name == "NULL")
-    throw torrent::input_error("Invalid throttle name.");
+    throw torrent::input_error("Invalid throttle name '" + name + "'.");
 
-  if ((++argItr)->as_string().empty())
-    return torrent::Object();
+  if (++argItr == args.end() || argItr->as_string().empty())
+    throw torrent::input_error("Missing throttle rate for '" + name + "'.");