diff --git a/away3d/cameras/lenses/OrthographicLens.hx b/away3d/cameras/lenses/OrthographicLens.hx
index b4c99adc..75ba0878 100644
--- a/away3d/cameras/lenses/OrthographicLens.hx
+++ b/away3d/cameras/lenses/OrthographicLens.hx
@@ -58,7 +58,7 @@ class OrthographicLens extends LensBase
 		var translation:Vector3D = Matrix3DUtils.CALCULATION_VECTOR3D;
 		matrix.copyColumnTo(3, translation);
 		v.x = nX + translation.x;
-		v.y = nX + translation.y;
+		v.y = -nY + translation.y;
 		v.z = sZ;
 		v.w = 1;
 
@@ -141,4 +141,4 @@ class OrthographicLens extends LensBase
 		
 		_matrixInvalid = false;
 	}
-}
\ No newline at end of file
+}