diff --git a/lib/winrm/shells/power_shell.rb b/lib/winrm/shells/power_shell.rb
index d9ca50d2..a291fc1d 100644
--- a/lib/winrm/shells/power_shell.rb
+++ b/lib/winrm/shells/power_shell.rb
@@ -34,12 +34,16 @@ def finalize(connection_opts, transport, shell_id)
         end
 
         def close_shell(connection_opts, transport, shell_id)
+          return false unless Thread.current.alive?
+          Thread.current.wakeup if Thread.current.status =~ /sleep/
           msg = WinRM::WSMV::CloseShell.new(
             connection_opts,
             shell_id: shell_id,
             shell_uri: WinRM::WSMV::Header::RESOURCE_URI_POWERSHELL
           )
           transport.send_request(msg.build)
+        rescue ThreadError => e
+          logger.debug("#{e.message}")
         end
       end