diff --git a/arch/sandbox/include/asm/barrier.h b/arch/sandbox/include/asm/barrier.h
new file mode 100644
index 00000000000..0928a78cbf8
--- /dev/null
+++ b/arch/sandbox/include/asm/barrier.h
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#define nop()