diff --git a/modules/policy/lua-aho-corasick b/modules/policy/lua-aho-corasick
index 5beaa28f4ef5ec20aa0adb75b54fabae556ec96d..09ac09e38778ef6f7470cbb3ecc320fc57d3c73c 160000
--- a/modules/policy/lua-aho-corasick
+++ b/modules/policy/lua-aho-corasick
@@ -1 +1 @@
-Subproject commit 5beaa28f4ef5ec20aa0adb75b54fabae556ec96d
+Subproject commit 09ac09e38778ef6f7470cbb3ecc320fc57d3c73c
diff --git a/modules/policy/policy.mk b/modules/policy/policy.mk
index cd49a1a27adccf42aef22427983320acfd69c471..98c9f8843aa029a36a8fdf0be634eac440d63322 100644
--- a/modules/policy/policy.mk
+++ b/modules/policy/policy.mk
@@ -7,8 +7,7 @@ $(call make_lua_module,policy)
 policy-clean:
 	$(MAKE) -C $(AHOCORASICK_DIR) clean
 $(AHOCORASICK_DIR)ahocorasick$(LIBEXT): $(AHOCORASICK_DIR)Makefile
-	$(MAKE) -C $(AHOCORASICK_DIR) ahocorasick$(LIBEXT) CFLAGS="$(lua_CFLAGS) -O2 $(CFLAGS)"
-	@# CFLAGS overridden to get rid of -msse4.1 etc.
+	$(MAKE) -C $(AHOCORASICK_DIR) ahocorasick$(LIBEXT) CXXFLAGS="$(lua_CFLAGS)"
 
 policy-install: ahocorasick-install
 ahocorasick-install: $(AHOCORASICK_DIR)ahocorasick$(LIBEXT) $(DESTDIR)$(MODULEDIR)