diff --git a/lib/ansible/modules/cloud/lxc/lxc_container.py b/lib/ansible/modules/cloud/lxc/lxc_container.py
index d3b6804ce5..8163d74f81 100644
--- a/lib/ansible/modules/cloud/lxc/lxc_container.py
+++ b/lib/ansible/modules/cloud/lxc/lxc_container.py
@@ -541,6 +541,7 @@ ATTACH_TEMPLATE = """#!/usr/bin/env bash
 pushd "$(getent passwd $(whoami)|cut -f6 -d':')"
     if [[ -f ".bashrc" ]];then
         source .bashrc
+        unset HOSTNAME
     fi
 popd