diff --git a/src/test/modules/libpq_pipeline/libpq_pipeline.c b/src/test/modules/libpq_pipeline/libpq_pipeline.c
index 95e653c8c3b..b6f5fd28b23 100644
--- a/src/test/modules/libpq_pipeline/libpq_pipeline.c
+++ b/src/test/modules/libpq_pipeline/libpq_pipeline.c
@@ -949,7 +949,7 @@ test_prepared(PGconn *conn)
 		pg_fatal("pipeline sync failed: %s", PQerrorMessage(conn));
 	res = PQgetResult(conn);
 	if (res == NULL)
-		pg_fatal("expected NULL result");
+		pg_fatal("PQgetResult returned null");
 	if (PQresultStatus(res) != PGRES_COMMAND_OK)
 		pg_fatal("expected COMMAND_OK, got %s", PQresStatus(PQresultStatus(res)));