diff --git a/server/core/session.c b/server/core/session.c
index 96ae728f1..e27ab282c 100644
--- a/server/core/session.c
+++ b/server/core/session.c
@@ -204,7 +204,9 @@ bool session_free(
 	atomic_add(&session->service->stats.n_current, -1);
 
 	/* Free router_session and session */
-        free(session->router_session);
+        if (session->router_session) {
+                free(session->router_session);
+        }
 	free(session);
         succp = true;