diff --git a/code/AssimpPCH.h b/code/AssimpPCH.h
index ed0fb9db9..9a365d7c0 100644
--- a/code/AssimpPCH.h
+++ b/code/AssimpPCH.h
@@ -147,4 +147,14 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "qnan.h"
 
 
+// We need those constants, workaround for any platforms where nobody defined them yet
+#if (!defined SIZE_MAX)
+#	define SIZE_MAX (~((size_t)0))
+#endif
+
+#if (!defined UINT_MAX)
+#	define UINT_MAX (~((unsigned int)0))
+#endif
+
+
 #endif // !! ASSIMP_PCH_INCLUDED