diff --git a/python-avd/pyavd/_eos_designs/structured_config/underlay/router_pim_sparse_mode.py b/python-avd/pyavd/_eos_designs/structured_config/underlay/router_pim_sparse_mode.py
index a9753eaa8fb..35e4b5ed227 100644
--- a/python-avd/pyavd/_eos_designs/structured_config/underlay/router_pim_sparse_mode.py
+++ b/python-avd/pyavd/_eos_designs/structured_config/underlay/router_pim_sparse_mode.py
@@ -36,7 +36,7 @@ def router_pim_sparse_mode(self: AvdStructuredConfigUnderlayProtocol) -> None:
                 if rp_entry.access_list_name:
                     rp_address.access_lists.append(rp_entry.access_list_name)
                 else:
-                    rp_address.groups.extend(rp._entry.groups)
+                    rp_address.groups.extend(rp_entry.groups)
 
             self.structured_config.router_pim_sparse_mode.ipv4.rp_addresses.append(rp_address)