diff --git a/CMakeLists.txt b/CMakeLists.txt
index db8bd01..305f9c7 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,4 +15,9 @@ initAll()
 
 # Add sub directories
 add_subdirectory(src)
-add_subdirectory(tests)
+
+if(DEFINED WITHOUT_TESTS)
+    message("conigured without tests")
+else()
+    add_subdirectory(tests)
+endif()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2a16689..f1fb4c0 100755
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -13,20 +13,11 @@ project(QtBigint LANGUAGES CXX)
 include(../CMake/ProjectOut.cmake)
 include(../CMake/Version.cmake)
 
-set(CMAKE_INCLUDE_CURRENT_DIR ON)
-set(CMAKE_AUTOMOC ON)
-set(CMAKE_AUTORCC ON)
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
-find_package(Qt5 COMPONENTS Core REQUIRED)
-
 file(GLOB SOURCE_CPP
     "*.cpp"
 )
 
 add_library(${PROJECT_NAME} SHARED ${SOURCE_CPP})
-target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Core)
 target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 
 setVersion(6 1 2)