diff --git a/OSCADSharp/OSCADSharp.UnitTests/MirrorTests.cs b/OSCADSharp/OSCADSharp.UnitTests/MirrorTests.cs
index 1f972cb..dc2747b 100644
--- a/OSCADSharp/OSCADSharp.UnitTests/MirrorTests.cs
+++ b/OSCADSharp/OSCADSharp.UnitTests/MirrorTests.cs
@@ -31,5 +31,14 @@ namespace OSCADSharp.UnitTests
             pos.Z = -pos.Z;
             Assert.AreEqual(pos, zMirror.Position());
         }
+
+        [TestMethod]
+        [ExpectedException(typeof(NotSupportedException))]
+        public void Mirror_MultiAxisPositionThrowsNotSupportedException()
+        {
+            var cube = new Cube(5, 10, 20);
+
+            var pos = cube.Mirror(1, 1, 0).Position();
+        }
     }
 }
diff --git a/OSCADSharp/OSCADSharp/Transforms/MirroredObject.cs b/OSCADSharp/OSCADSharp/Transforms/MirroredObject.cs
index 2412980..05f4dc7 100644
--- a/OSCADSharp/OSCADSharp/Transforms/MirroredObject.cs
+++ b/OSCADSharp/OSCADSharp/Transforms/MirroredObject.cs
@@ -55,6 +55,11 @@ namespace OSCADSharp.Transforms
         // fix mirrored positions for multiple-axis mirroring
         public override Vector3 Position()
         {
+            if (this.isMoreThanOneAxis())
+            {
+                throw new NotSupportedException("Getting the position of an object that's been mirrored on more than one axis is not currently supported.");
+            }
+
             var pos = obj.Position();
 
             double x = this.Normal.X != 0 ? pos.X * -1 : pos.X;
@@ -63,5 +68,11 @@ namespace OSCADSharp.Transforms
 
             return new Vector3(x, y, z);
         }
+
+        private bool isMoreThanOneAxis()
+        {
+            return (this.Normal.X != 0 && (this.Normal.Y != 0 || this.Normal.Z != 0)) ||
+                (this.Normal.Y != 0 && (this.Normal.X != 0 || this.Normal.Z != 0));
+        }
     }
 }