diff --git a/integration_tests/tests/test_wal_acceptor.rs b/integration_tests/tests/test_wal_acceptor.rs
index 6b3a035c1c..a9572a09ce 100644
--- a/integration_tests/tests/test_wal_acceptor.rs
+++ b/integration_tests/tests/test_wal_acceptor.rs
@@ -20,7 +20,7 @@ fn start_node_with_wal_proposer(
     node.append_conf(
         "postgresql.conf",
         &format!("wal_acceptors='{}'\n", wal_acceptors),
-    );
+    )?;
     node.start().unwrap();
     node
 }