diff --git a/Android.libv8.mk b/Android.libv8.mk
index 41815ce..a4f8351 100644
--- a/Android.libv8.mk
+++ b/Android.libv8.mk
@@ -47,7 +47,7 @@
 $(GEN1): $(LOCAL_JS_LIBRARY_FILES) $(JS2C_PY)
 	@echo "Generating libraries.cc"
 	@mkdir -p $(dir $@)
-	python $(SCRIPT) $@ CORE off $(LOCAL_JS_LIBRARY_FILES)
+	python $(SCRIPT) $@ CORE $(LOCAL_JS_LIBRARY_FILES)
 V8_GENERATED_LIBRARIES := $(generated_sources)/libraries.cc
 
 # Generate experimental-libraries.cc
@@ -56,7 +56,7 @@
 $(GEN2): $(LOCAL_JS_EXPERIMENTAL_LIBRARY_FILES) $(JS2C_PY)
 	@echo "Generating experimental-libraries.cc"
 	@mkdir -p $(dir $@)
-	python $(SCRIPT) $@ EXPERIMENTAL off $(LOCAL_JS_EXPERIMENTAL_LIBRARY_FILES)
+	python $(SCRIPT) $@ EXPERIMENTAL $(LOCAL_JS_EXPERIMENTAL_LIBRARY_FILES)
 V8_GENERATED_LIBRARIES += $(generated_sources)/experimental-libraries.cc
 
 LOCAL_GENERATED_SOURCES += $(V8_GENERATED_LIBRARIES)