diff --git a/Makefile b/Makefile
index 9d0a91e16..de71e9b39 100644
--- a/Makefile
+++ b/Makefile
@@ -366,6 +366,7 @@ o/cosmopolitan.h:							\
 	$(file >$(TMPDIR)/$(subst /,_,$@),libc/integral/normalize.inc $(foreach x,$(COSMOPOLITAN_HEADERS),$($(x)_HDRS)))
 	@$(COMPILE) -AROLLUP -T$@ o/$(MODE)/tool/build/rollup.com @$(TMPDIR)/$(subst /,_,$@) >$@
 
+o/cosmopolitan.html: .UNSANDBOXED = 1
 o/cosmopolitan.html:							\
 		o/$(MODE)/third_party/chibicc/chibicc.com.dbg		\
 		$(filter-out %.s,$(foreach x,$(COSMOPOLITAN_OBJECTS),$($(x)_SRCS)))	\