diff --git a/Makefile b/Makefile
index e18e0c0560..7c9b671159 100644
--- a/Makefile
+++ b/Makefile
@@ -180,6 +180,7 @@ $$($(1)_TARGET): $$($(1)_SRCS) Makefile $$($(1)_DEPS)
 		$$($(1)_EXTRA) \
 		$$($(1)_SRCS)
 	@test -e fixheader.exe && mono fixheader.exe $$(@) || ``
+	@chmod a-x $$(@)
 endef
 
 $(foreach prog,$(PROGRAMS),$(eval $(call BUILD_ASSEMBLY,$(prog))))