diff --git a/UI/Android/CMakeLists.txt b/UI/Android/CMakeLists.txt
index 2807a19a3e3..8dab566ac4b 100644
--- a/UI/Android/CMakeLists.txt
+++ b/UI/Android/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_library(ladybird SHARED
-    ${LADYBIRD_SOURCES}
     src/main/cpp/LadybirdActivity.cpp
     src/main/cpp/WebViewImplementationNative.cpp
     src/main/cpp/WebViewImplementationNativeJNI.cpp
diff --git a/UI/AppKit/CMakeLists.txt b/UI/AppKit/CMakeLists.txt
index 2ccb22d5aed..508f12f6fe9 100644
--- a/UI/AppKit/CMakeLists.txt
+++ b/UI/AppKit/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_library(ladybird_impl STATIC
-    ${LADYBIRD_SOURCES}
     Application/Application.mm
     Application/ApplicationDelegate.mm
     Interface/Autocomplete.mm
diff --git a/UI/Headless/CMakeLists.txt b/UI/Headless/CMakeLists.txt
index e6440036c67..1cbbe06ac24 100644
--- a/UI/Headless/CMakeLists.txt
+++ b/UI/Headless/CMakeLists.txt
@@ -1,5 +1,4 @@
 set(SOURCES
-    ${LADYBIRD_SOURCES}
     Application.cpp
     Fixture.cpp
     HeadlessWebView.cpp
diff --git a/UI/Qt/CMakeLists.txt b/UI/Qt/CMakeLists.txt
index 93fa801ebf9..91f5a1174d3 100644
--- a/UI/Qt/CMakeLists.txt
+++ b/UI/Qt/CMakeLists.txt
@@ -1,4 +1,4 @@
-qt_add_executable(ladybird ${LADYBIRD_SOURCES})
+qt_add_executable(ladybird main.cpp)
 target_sources(ladybird PRIVATE
     Application.cpp
     Autocomplete.cpp
@@ -13,7 +13,6 @@ target_sources(ladybird PRIVATE
     StringUtils.cpp
     WebContentView.cpp
     ladybird.qrc
-    main.cpp
 )
 target_link_libraries(ladybird PRIVATE Qt::Core Qt::Gui Qt::Widgets)
 create_ladybird_bundle(ladybird)