diff --git a/plat/st/common/bl2_io_storage.c b/plat/st/common/bl2_io_storage.c
index 0a18d99..3dafcb9 100644
--- a/plat/st/common/bl2_io_storage.c
+++ b/plat/st/common/bl2_io_storage.c
@@ -651,6 +651,7 @@
 	default:
 		ERROR("Boot interface %d not supported\n",
 		      boot_context->boot_interface_selected);
+		panic();
 		break;
 	}
 }