diff --git a/power-supply/power_supply.cpp b/power-supply/power_supply.cpp
index f6f658a..8a00d59 100644
--- a/power-supply/power_supply.cpp
+++ b/power-supply/power_supply.cpp
@@ -52,6 +52,8 @@
       presentInterval(p),
       presentTimer(e, [this]()
                    {
+                       // The hwmon path may have changed.
+                       pmbusIntf.findHwmonDir();
                        this->present = true;
                    }),
       powerOnInterval(t),