diff --git a/defaults/main.yml b/defaults/main.yml
index fa7a045..c14fcab 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -135,7 +135,7 @@ checkmk_agent__hostname: '{{ ansible_fqdn }}'
 # Check_MK attributes and WATO tags used for managing the host. For more
 # details check :ref:`checkmk_agent__host_attributes`.
 checkmk_agent__host_attributes:
-  tag_agent: '{{ "cmk-agent-ssh" if "ssh" in checkmk_agent else "cmk-agent" }}'
+  tag_agent: '{{ "cmk-agent-ssh" if "ssh" in checkmk_agent__type|d(["ssh"]) else "cmk-agent" }}'
 
 
 # .. envvar:: checkmk_agent__discovery_mode