diff --git a/src/power_control.cpp b/src/power_control.cpp
index edf95e8..41e4c9a 100644
--- a/src/power_control.cpp
+++ b/src/power_control.cpp
@@ -2438,6 +2438,9 @@
             tempGpioData->lineName =
                 gpioConfig[dbusParams[DbusConfigType::property]];
 
+            // dbus-based inputs must be active-high.
+            tempGpioData->polarity = true;
+
             // MatchRegex is optional
             auto item = gpioConfig.find("MatchRegex");
             if (item != gpioConfig.end())