diff --git a/monitor/fan.cpp b/monitor/fan.cpp
index 81d27e0..637a3ca 100644
--- a/monitor/fan.cpp
+++ b/monitor/fan.cpp
@@ -53,6 +53,7 @@
                             *this,
                             std::get<sensorNameField>(s),
                             std::get<hasTargetField>(s),
+                            std::get<targetInterfaceField>(s),
                             std::get<factorField>(s),
                             std::get<offsetField>(s),
                             std::get<timeoutField>(def),