diff --git a/core/main.mk b/core/main.mk
index 2cfea453cf..cdbc3ef755 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -460,6 +460,9 @@ BUILD_WITHOUT_PV := true
 
 ADDITIONAL_SYSTEM_PROPERTIES += net.bt.name=Android
 
+# This property is set by flashing debug boot image, so default to false.
+ADDITIONAL_SYSTEM_PROPERTIES += ro.force.debuggable=0
+
 # ------------------------------------------------------------
 # Define a function that, given a list of module tags, returns
 # non-empty if that module should be installed in /system.