diff --git a/util/dbus.hpp b/util/dbus.hpp
index 39041e2..6c1a554 100644
--- a/util/dbus.hpp
+++ b/util/dbus.hpp
@@ -12,7 +12,7 @@
 namespace dbus
 {
 using DBusValue         = std::variant<std::string, bool, std::vector<uint8_t>,
-                               std::vector<std::string>>;
+                               std::vector<std::string>, int32_t>;
 using DBusProperty      = std::string;
 using DBusInterface     = std::string;
 using DBusService       = std::string;
@@ -179,5 +179,12 @@
  */
 bool getMctpInstance(uint8_t& mctpInstance, uint8_t Eid);
 
+/**
+ * @brief Determine if power fault was detected
+ *
+ * @return true if power fault or unknown, false otherwise
+ */
+bool powerFault();
+
 } // namespace dbus
 } // namespace util