diff --git a/Makefile b/Makefile
index 52f0851cf..b1c7e279c 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@
 
 HOSTCC?=cc
 
-export CROSS_COMPILE CFLAGS OPTIMIZE LDOPTIMIZE CC HOSTCC V STRIP
+export CROSS_COMPILE CFLAGS OPTIMIZE LDOPTIMIZE CC HOSTCC V STRIP ASAN
 
 all: toybox
 
@@ -73,6 +73,7 @@ distclean: clean root_clean
 	@rm -f toybox* .config* .singlemake
 	@echo removed .config
 
+tests: ASAN=1
 tests: toybox
 	scripts/test.sh