diff --git a/build/targets.simulator.web.mak b/build/targets.simulator.web.mak
index 18ec0563b..123ea969f 100644
--- a/build/targets.simulator.web.mak
+++ b/build/targets.simulator.web.mak
@@ -1,6 +1,13 @@
 $(BUILD_DIR)/test.js: EMSCRIPTEN_MODULARIZE = 0
 
-HANDY_TARGETS += htmlpack
+HANDY_TARGETS += htmlpack htmlpack.official
 HANDY_TARGETS_EXTENSIONS += zip
 
-$(BUILD_DIR)/htmlpack.zip: $(addprefix $(BUILD_DIR)/ion/src/simulator/web/,calculator.html calculator.css) $(BUILD_DIR)/epsilon.js ion/src/simulator/web/calculator.js
+htmlpack_targets = .\
+  .official. \
+
+define rule_htmlpack
+$$(BUILD_DIR)/htmlpack$(1)zip: $$(addprefix $$(BUILD_DIR)/ion/src/simulator/web/,calculator.html calculator.css) $$(BUILD_DIR)/epsilon$(1)js ion/src/simulator/web/calculator.js
+endef
+
+$(foreach target,$(htmlpack_targets),$(eval $(call rule_htmlpack,$(target))))