diff --git a/core/sdk_check.mk b/core/sdk_check.mk
index c5c2bc8..a34f83c 100644
--- a/core/sdk_check.mk
+++ b/core/sdk_check.mk
@@ -3,6 +3,11 @@
 # set correctly.
 # Should be included by java targets that allow specifying LOCAL_SDK_VERSION.
 
+
+ifeq (,$(JAVA_SDK_ENFORCEMENT_ERROR))
+  JAVA_SDK_ENFORCEMENT_ERROR := APPS
+endif
+
 ifeq ($(LOCAL_SDK_VERSION)$(LOCAL_PRIVATE_PLATFORM_APIS),)
 ifneq ($(JAVA_SDK_ENFORCEMENT_WARNING),)
 $(warning Java modules must specify LOCAL_SDK_VERSION or LOCAL_PRIVATE_PLATFORM_APIS, but $(LOCAL_MODULE) specifies neither.)