diff --git a/sos/cleaner/mappings/hostname_map.py b/sos/cleaner/mappings/hostname_map.py
index dbb97d983c..a92ea8e8a0 100644
--- a/sos/cleaner/mappings/hostname_map.py
+++ b/sos/cleaner/mappings/hostname_map.py
@@ -89,7 +89,7 @@ def get_regex_result(self, item):
         """
         if '.' in item:
             item = item.replace('.', '(\\.|_)')
-        return re.compile(item, re.I)
+        return super(SoSHostnameMap, self).get_regex_result(item)
 
     def set_initial_counts(self):
         """Set the initial counter for host and domain obfuscation numbers