diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c563663b0..16727351c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -445,8 +445,10 @@ IF(wxWidgets_FOUND AND OPENGL_FOUND AND Enable_GUI)
         endif()
         add_executable(gui_test ${UI_TEST_SOURCES}) 
         add_test(NAME TestGUI COMMAND gui_test)
+        configure_file("${TESTDIR}/test_options.hpp.in" "${TESTDIR}/test_options.hpp")
         target_link_libraries(gui_test PUBLIC slic3r_gui libslic3r Catch ${wxWidgets_LIBRARIES} ${LIBSLIC3R_DEPENDS} ${OPENGL_LIBRARIES})
         target_include_directories(gui_test PUBLIC cxx_std_14 ${SLIC3R_GUI_INCLUDES} )
+        target_include_directories(gui_test PUBLIC ${TESTDIR})
     endif()
     if (WIN32)
         target_link_libraries(slic3r uxtheme)    
@@ -524,12 +526,12 @@ if (SLIC3R_BUILD_TESTS)
         target_include_directories(Catch INTERFACE ${CMAKE_BINARY_DIR}/external/Catch/include)
         target_compile_definitions(Catch INTERFACE $<$<CXX_COMPILER_ID:MSVC>:_SILENCE_CXX17_UNCAUGHT_EXCEPTION_DEPRECATION_WARNING>)
     endif()
-    include_directories(${TESTDIR})
     configure_file("${TESTDIR}/test_options.hpp.in" "${TESTDIR}/test_options.hpp")
     add_executable(slic3r_test ${SLIC3R_TEST_SOURCES}) 
     add_test(NAME TestSlic3r COMMAND slic3r_test)
     target_compile_features(slic3r_test PUBLIC cxx_std_14)
     target_include_directories(slic3r_test PUBLIC cxx_std_14 ${SLIC3R_INCLUDES})
+    target_include_directories(slic3r_test PUBLIC ${TESTDIR})
 
     target_link_libraries(slic3r_test PUBLIC libslic3r Catch ${LIBSLIC3R_DEPENDS})
 endif()