diff --git a/modules/thermal/Android.mk b/modules/thermal/Android.mk
index 80ad78a..ff51145 100644
--- a/modules/thermal/Android.mk
+++ b/modules/thermal/Android.mk
@@ -18,6 +18,7 @@
 
 LOCAL_MODULE := thermal.default
 LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
 LOCAL_SRC_FILES := thermal.c
 LOCAL_SHARED_LIBRARIES := liblog libcutils
 LOCAL_MODULE_TAGS := optional