diff --git a/pyeapi/api/mlag.py b/pyeapi/api/mlag.py
index 6827615..6c523d8 100644
--- a/pyeapi/api/mlag.py
+++ b/pyeapi/api/mlag.py
@@ -116,7 +116,7 @@ def _parse_domain_id(self, config):
             dict: A dict object that is intended to be merged into the
                 resource dict
         """
-        match = re.search(r'domain-id (.+)', config)
+        match = re.search(r'domain-id (.+)$', config)
         value = match.group(1) if match else None
         return dict(domain_id=value)