diff --git a/src/platform/qt/CMakeLists.txt b/src/platform/qt/CMakeLists.txt
index b80f22f50..32c6b1d7a 100644
--- a/src/platform/qt/CMakeLists.txt
+++ b/src/platform/qt/CMakeLists.txt
@@ -3,6 +3,8 @@ enable_language(CXX)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --std=c++11")
 
+set(PLATFORM_SRC)
+
 if(BUILD_SDL)
 	if(NOT SDL_FOUND AND NOT SDL2_FOUND)
 		find_package(SDL 1.2 REQUIRED)
@@ -10,8 +12,8 @@ if(BUILD_SDL)
 	if(SDL2_FOUND)
 		link_directories(${SDL2_LIBDIR})
 	endif()
-	set(PLATFORM_LIBRARY "${PLATFORM_LIBRARY};${SDL_LIBRARY};${SDLMAIN_LIBRARY}")
-	set(PLATFORM_SRC ${PLATFORM_SRC} ${CMAKE_SOURCE_DIR}/src/platform/sdl/sdl-events.c ${CMAKE_SOURCE_DIR}/src/platform/sdl/sdl-audio.c)
+	list(APPEND PLATFORM_LIBRARY ${SDL_LIBRARY} ${SDLMAIN_LIBRARY})
+	list(APPEND PLATFORM_SRC ${PLATFORM_SRC} ${CMAKE_SOURCE_DIR}/src/platform/sdl/sdl-events.c ${CMAKE_SOURCE_DIR}/src/platform/sdl/sdl-audio.c)
 	include_directories(${SDL_INCLUDE_DIR} ${CMAKE_SOURCE_DIR}/src/platform/sdl)
 endif()
 
@@ -68,7 +70,7 @@ else()
 endif()
 
 if(USE_GDB_STUB)
-	set(SOURCE_FILES ${PLATFORM_SRC} ${SOURCE_FILES} GDBController.cpp GDBWindow.cpp)
+	list(APPEND PLATFORM_SRC GDBController.cpp GDBWindow.cpp)
 endif()
 set(MACOSX_BUNDLE_ICON_FILE mgba.icns)
 set(MACOSX_BUNDLE_BUNDLE_VERSION ${LIB_VERSION_STRING})
@@ -80,7 +82,7 @@ qt5_add_resources(RESOURCES resources.qrc)
 if(WIN32)
 	list(APPEND RESOURCES ${CMAKE_SOURCE_DIR}/res/mgba.rc)
 endif()
-add_executable(${BINARY_NAME}-qt WIN32 MACOSX_BUNDLE main.cpp ${CMAKE_SOURCE_DIR}/res/mgba.icns ${SOURCE_FILES} ${UI_FILES} ${RESOURCES})
+add_executable(${BINARY_NAME}-qt WIN32 MACOSX_BUNDLE main.cpp ${CMAKE_SOURCE_DIR}/res/mgba.icns ${SOURCE_FILES} ${PLATFORM_SRC} ${UI_FILES} ${RESOURCES})
 set_target_properties(${BINARY_NAME}-qt PROPERTIES MACOSX_BUNDLE_INFO_PLIST ${CMAKE_SOURCE_DIR}/res/info.plist.in)
 
 set(QT_LIBRARIES Qt5::Widgets Qt5::OpenGL)
diff --git a/src/platform/qt/GameController.cpp b/src/platform/qt/GameController.cpp
index 61c8ecda8..678928090 100644
--- a/src/platform/qt/GameController.cpp
+++ b/src/platform/qt/GameController.cpp
@@ -100,6 +100,7 @@ GameController::~GameController() {
 	delete[] m_drawContext;
 }
 
+#ifdef USE_GDB_STUB
 ARMDebugger* GameController::debugger() {
 	return m_threadContext.debugger;
 }
@@ -116,6 +117,7 @@ void GameController::setDebugger(ARMDebugger* debugger) {
 	}
 	setPaused(wasPaused);
 }
+#endif
 
 void GameController::loadGame(const QString& path, bool dirmode) {
 	closeGame();