diff --git a/CMakeLists.txt b/CMakeLists.txt
index caca5cf..ca357b0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,6 @@ add_library(RoboidControl STATIC
     "Motor.cpp"
     "DifferentialDrive.cpp"
     "DistanceSensor.cpp"
-    "Placement.cpp"
     "Sensor.cpp"
     "Switch.cpp"
     "Thing.cpp"