diff --git a/src/ExternalSensor.cpp b/src/ExternalSensor.cpp
index cbba6e1..1717e49 100644
--- a/src/ExternalSensor.cpp
+++ b/src/ExternalSensor.cpp
@@ -55,8 +55,8 @@
             objectServer.add_interface(objectPath, interface);
     }
 
-    association =
-        objectServer.add_interface(objectPath, association::interface);
+    association = objectServer.add_interface(objectPath,
+                                             association::interface);
     setInitialProperties(sensorUnits);
 
     if constexpr (debug)