diff --git a/examples/ImageRotation.cpp b/examples/ImageRotation.cpp
index b3063b1f..aa477bb5 100644
--- a/examples/ImageRotation.cpp
+++ b/examples/ImageRotation.cpp
@@ -19,6 +19,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
+#define _USE_MATH_DEFINES
 
 #include <cmath>
 #include "Example.h"