diff --git a/CMakeLists.txt b/CMakeLists.txt
index e504985..7af9b1b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,7 +39,6 @@ include_directories(${PROJECT_BINARY_DIR})
 
 add_definitions(-DFMT_HEADER_ONLY)
 include_directories(3rd)
-add_subdirectory(3rd/SingleApplication-3.5.2)
 
 if(NOT DEFINED COMPILER_USE_MINGW)
 add_subdirectory(crashelper)
@@ -50,6 +49,7 @@ add_subdirectory(Server)
 add_subdirectory(ClientCore)
 add_subdirectory(Util)
 if(DEFINED COMPILE_GUI)
+add_subdirectory(3rd/SingleApplication-3.5.2)
 add_subdirectory(Gui)
 endif()
 add_subdirectory(Console)