diff --git a/phosphor-power-supply/power_supply.hpp b/phosphor-power-supply/power_supply.hpp
index c995376..8e82927 100644
--- a/phosphor-power-supply/power_supply.hpp
+++ b/phosphor-power-supply/power_supply.hpp
@@ -448,7 +448,7 @@
      *
      * Considered faulted if reaches DEGLITCH_LIMIT.
      */
-    int pgoodFault = 0;
+    size_t pgoodFault = 0;
 
     /**
      * @brief Power Supply Kill fault.