diff --git a/code/PlyExporter.cpp b/code/PlyExporter.cpp
index 72c95e884..32cb61058 100644
--- a/code/PlyExporter.cpp
+++ b/code/PlyExporter.cpp
@@ -48,7 +48,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "../include/assimp/scene.h"
 #include "../include/assimp/version.h"
 #include "../include/assimp/IOSystem.hpp"
-#include "../include/assimp/Exporter.hpp"
+#include "../include/assimp/Exporter.hpp"
+#include "qnan.h"
 
 
 using namespace Assimp;