diff --git a/gmso/parameterization/topology_parameterizer.py b/gmso/parameterization/topology_parameterizer.py
index f336326fb..6127d8520 100644
--- a/gmso/parameterization/topology_parameterizer.py
+++ b/gmso/parameterization/topology_parameterizer.py
@@ -386,11 +386,11 @@ def connection_identifier(
         group = POTENTIAL_GROUPS[type(connection)]
         return group, [
             list(
-                member.atom_type.atomclass
+                member.atom_type.name
                 for member in connection.connection_members
             ),
             list(
-                member.atom_type.name
+                member.atom_type.atomclass
                 for member in connection.connection_members
             ),
         ]