diff --git a/common/ssh_client/remote_client.py b/common/ssh_client/remote_client.py
index 5516324a..311aa785 100644
--- a/common/ssh_client/remote_client.py
+++ b/common/ssh_client/remote_client.py
@@ -84,7 +84,8 @@ def exec_cmd(self, cmd):
                 self.stdio.verbose("use remote_client_sudo")
                 stdin, stdout, stderr = self._ssh_fd.exec_command("sudo -n true")
                 if stderr:
-                    raise Exception(stderr.read().decode('utf-8'))
+                    if len(stderr.read().decode('utf-8').strip())> 0:
+                        raise Exception(stderr.read().decode('utf-8'))
                 cmd = "sudo {0}".format(cmd)
             stdin, stdout, stderr = self._ssh_fd.exec_command(cmd)
             err_text = stderr.read()