diff --git a/core/soong_droiddoc_prebuilt.mk b/core/soong_droiddoc_prebuilt.mk
index c0467df..4e082bf 100644
--- a/core/soong_droiddoc_prebuilt.mk
+++ b/core/soong_droiddoc_prebuilt.mk
@@ -12,6 +12,11 @@
 $(LOCAL_MODULE) : $(OUT_DOCS)/$(LOCAL_MODULE)-stubs.srcjar
 endif
 
+ifdef INTERNAL_PLATFORM_API_FILE
+.PHONY: $(LOCAL_MODULE) $(LOCAL_MODULE).txt
+$(LOCAL_MODULE) $(LOCAL_MODULE).txt : $(INTERNAL_PLATFORM_API_FILE) $(INTERNAL_PLATFORM_REMOVED_API_FILE)
+endif
+
 ifdef LOCAL_DROIDDOC_DOC_ZIP
 $(eval $(call copy-one-file,$(LOCAL_DROIDDOC_DOC_ZIP),$(OUT_DOCS)/$(LOCAL_MODULE)-docs.zip))
 $(call dist-for-goals,docs,$(OUT_DOCS)/$(LOCAL_MODULE)-docs.zip)