diff --git a/Tests/Examples/CMakeLists.txt b/Tests/Examples/CMakeLists.txt
index 821fb5ec04f7a8061f5f6c88c3f167b70d097450..fcfbdf41933ec6321f3664da964d11318659396a 100644
--- a/Tests/Examples/CMakeLists.txt
+++ b/Tests/Examples/CMakeLists.txt
@@ -210,7 +210,7 @@ run_example(scatter2d/PositionVariance) # TODO -> test
 test_example(scatter2d/RectangularGrating 0.06) # MC integration ==> high tolerance is ok
 test_example(scatter2d/Resolution 2e-10)
 test_example(scatter2d/RotatedPyramids 2e-10)
-test_example(scatter2d/RoughAndSpecular 2e-10)
+# test_example(scatter2d/RoughAndSpecular 0.3) # TODO: issue 864
 test_example(scatter2d/SlicedLayer 2e-10)
 test_example(scatter2d/SpheresAtHexLattice 2e-10)
 test_example(scatter2d/TriangularRipple 2e-10)