diff --git a/include/utils/misc.h b/include/utils/misc.h
index 23f2a4c..d7d5bc1 100644
--- a/include/utils/misc.h
+++ b/include/utils/misc.h
@@ -88,6 +88,10 @@
 void k_itoa(int value, char* str, int base);
 char* itoa(int val, int base);
 
+typedef void (*sysprop_change_callback)(void);
+void add_sysprop_change_callback(sysprop_change_callback cb, int priority);
+void report_sysprop_change();
+
 }; // namespace android
 
 #endif // _LIBS_UTILS_MISC_H