diff --git a/CMakeLists.txt b/CMakeLists.txt
index d0c6ce5..1d57691 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,7 +43,7 @@
 set (IPMB_SRC_FILES src/Utils.cpp src/Thresholds.cpp)
 
 set (PSU_SRC_FILES src/Utils.cpp src/PSUSensor.cpp src/Thresholds.cpp
-     src/PwmSensor.cpp)
+     src/PwmSensor.cpp src/PSUEvent.cpp)
 
 set (EXTERNAL_PACKAGES Boost sdbusplus-project nlohmann-json)
 set (SENSOR_LINK_LIBS -lsystemd stdc++fs sdbusplus)