diff --git a/Userland/Applications/Piano/CMakeLists.txt b/Userland/Applications/Piano/CMakeLists.txt
index 671ff1a311..305d1276ae 100644
--- a/Userland/Applications/Piano/CMakeLists.txt
+++ b/Userland/Applications/Piano/CMakeLists.txt
@@ -7,7 +7,6 @@ serenity_component(
 
 set(SOURCES
     AudioPlayerLoop.cpp
-    TrackManager.cpp
     KeysWidget.cpp
     KnobsWidget.cpp
     main.cpp
@@ -15,9 +14,10 @@ set(SOURCES
     PlayerWidget.cpp
     RollWidget.cpp
     SamplerWidget.cpp
+    TrackManager.cpp
     WaveWidget.cpp
-    ProcessorParameterWidget/Slider.cpp
     ProcessorParameterWidget/ParameterWidget.cpp
+    ProcessorParameterWidget/Slider.cpp
 )
 
 serenity_app(Piano ICON app-piano)