diff --git a/Makefile b/Makefile
index 1cb9cf9b3..f7d9428e5 100644
--- a/Makefile
+++ b/Makefile
@@ -163,6 +163,9 @@ export srctree objtree VPATH
 # Alternatively CROSS_COMPILE can be set in the environment.
 # Default value for CROSS_COMPILE is not to prefix executables
 
+ARCH := sandbox
+CROSS_COMPILE :=
+
 # Architecture as present in compile.h
 UTS_MACHINE := $(ARCH)