diff --git a/CleanSpec.mk b/CleanSpec.mk
index 5b18d44b2..f5f79919e 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -329,6 +329,11 @@ $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
 # instead.
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
 
+# Adding dalvik.vm.usejit
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/build.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/default.prop)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/default.prop)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/main.mk b/core/main.mk
index 981ecef6b..4a2a6261c 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -390,6 +390,7 @@ ifndef is_sdk_build
   # Don't compile apps on eng builds to speed startup
   ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.dex2oat-filter=interpret-only
 endif
+  ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.usejit=true
 endif
 
 ## sdk ##