diff --git a/src/driver/slbt_driver_ctx.c b/src/driver/slbt_driver_ctx.c
index b2a600d..d1551dc 100644
--- a/src/driver/slbt_driver_ctx.c
+++ b/src/driver/slbt_driver_ctx.c
@@ -538,6 +538,7 @@ int slbt_get_driver_ctx(
 			nunits++;
 	}
 
+	/* driver context */
 	if (!(ctx = slbt_driver_ctx_alloc(meta,&cctx,nunits)))
 		return slbt_get_driver_ctx_fail(meta);