diff --git a/proxy/http/HttpSM.cc b/proxy/http/HttpSM.cc
index 8221a3ca38c..90d4d2d4935 100644
--- a/proxy/http/HttpSM.cc
+++ b/proxy/http/HttpSM.cc
@@ -7483,6 +7483,9 @@ HttpSM::kill_this()
       server_txn = nullptr;
     }
     if (_ua.get_txn()) {
+      if (_ua.get_txn()->get_server_session() != nullptr) {
+        _ua.get_txn()->attach_server_session(nullptr);
+      }
       _ua.get_txn()->transaction_done();
     }