diff --git a/freeglut/freeglut/CMakeLists.txt b/freeglut/freeglut/CMakeLists.txt
index be50f98..8da214d 100644
--- a/freeglut/freeglut/CMakeLists.txt
+++ b/freeglut/freeglut/CMakeLists.txt
@@ -392,10 +392,10 @@ ENDIF()
 IF(WIN32)
     LIST(APPEND LIBS winmm)
     IF(FREEGLUT_BUILD_SHARED_LIBS)
-        SET_TARGET_PROPERTIES(freeglut PROPERTIES COMPILE_FLAGS -DFREEGLUT_EXPORTS)
+        TARGET_COMPILE_DEFINITIONS(freeglut PRIVATE FREEGLUT_EXPORTS)
     ENDIF()
     IF(FREEGLUT_BUILD_STATIC_LIBS)
-        SET_TARGET_PROPERTIES(freeglut_static PROPERTIES COMPILE_FLAGS -DFREEGLUT_STATIC)
+        TARGET_COMPILE_DEFINITIONS(freeglut_static PUBLIC FREEGLUT_STATIC)
         # need to set machine:x64 for linker, at least for VC10, and
         # doesn't hurt for older compilers:
         # http://public.kitware.com/Bug/view.php?id=11240#c22768
@@ -509,7 +509,6 @@ MACRO(ADD_DEMO name)
         IF(FREEGLUT_BUILD_STATIC_LIBS)
             ADD_EXECUTABLE(${name}_static ${ARGN})
             TARGET_LINK_LIBRARIES(${name}_static ${DEMO_LIBS} freeglut_static)
-            SET_TARGET_PROPERTIES(${name}_static PROPERTIES COMPILE_FLAGS -DFREEGLUT_STATIC)
             IF(WIN32 AND MSVC)
                 SET_TARGET_PROPERTIES(${name}_static PROPERTIES DEBUG_POSTFIX d)
             ENDIF()