diff --git a/test/algorithms/set_operations/difference/difference.cpp b/test/algorithms/set_operations/difference/difference.cpp
index dd2068231..8b9297322 100644
--- a/test/algorithms/set_operations/difference/difference.cpp
+++ b/test/algorithms/set_operations/difference/difference.cpp
@@ -7,6 +7,7 @@
 // Modifications copyright (c) 2015, Oracle and/or its affiliates.
 
 // Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
+// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
 
 // Use, modification and distribution is subject to the Boost Software License,
 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
@@ -674,6 +675,21 @@ void test_all()
             5, 22, 1.1901714,
             5, 27, 1.6701714);
     ***/
+
+#ifdef BOOST_GEOMETRY_TEST_ENABLE_FAILING
+    test_one<polygon, polygon, polygon>("ticket_11725_2",
+        "POLYGON((0 0,0 3,3 3,3 0,0 0))",
+        "POLYGON((3 1,1 1,1 2,2 2,3 1))",
+        2, -1, 7.5, 0, -1, 0.0);
+    test_one<polygon, polygon, polygon>("mysql_21977775",
+        "POLYGON((8 6,5 7,-1 4,-8 -7, 0 -17, 8 6), (3 6, 5 5, 0 -2, 3 6))",
+        "POLYGON((3 3,-17 11,-8 -3, 3 3))",
+        2, -1, 160.856568913, 2, -1, 92.3565689126);
+    test_one<polygon, polygon, polygon>("mysql_21965285",
+        "POLYGON((7 3,0 10,0 -6, 9 -5, 7 7, 7 3), (0 8, 2 3, 2 -2, 0 8))",
+        "POLYGON((0 6,0 8,-14 13,0 6))",
+        0, -1, 0.0, 0, -1, 0.0);
+#endif
 }
 
 /*******