diff --git a/c_src/sqlite3_drv.c b/c_src/sqlite3_drv.c
index 85aa2c3..5ce07f6 100644
--- a/c_src/sqlite3_drv.c
+++ b/c_src/sqlite3_drv.c
@@ -887,7 +887,8 @@ static int prepare(sqlite3_drv_t *drv, char *command, int command_size) {
 
   ErlDrvTermData spec[] = {
       ERL_DRV_PORT, driver_mk_port(drv->port),
-      ERL_DRV_UINT, drv->prepared_count - 1
+      ERL_DRV_UINT, drv->prepared_count - 1,
+      ERL_DRV_TUPLE, 2
   };
   return driver_output_term(drv->port, spec, sizeof(spec) / sizeof(spec[0]));
 }