diff --git a/src/posix/platform/multicast_routing.cpp b/src/posix/platform/multicast_routing.cpp
index 3835a3bcc..e9564a0ae 100644
--- a/src/posix/platform/multicast_routing.cpp
+++ b/src/posix/platform/multicast_routing.cpp
@@ -87,6 +87,7 @@ void MulticastRoutingManager::TearDown(void)
 
     otBackboneRouterSetMulticastListenerCallback(gInstance, nullptr, nullptr);
     Mainloop::Manager::Get().Remove(*this);
+    FinalizeMulticastRouterSock();
 }
 
 void MulticastRoutingManager::HandleBackboneMulticastListenerEvent(void                                  *aContext,