diff --git a/test/algorithms/difference.cpp b/test/algorithms/difference.cpp
index 1d48fc7b8..e72af3c24 100644
--- a/test/algorithms/difference.cpp
+++ b/test/algorithms/difference.cpp
@@ -7,7 +7,7 @@
 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt)
 
-#define TEST_ISOVIST
+// #define TEST_ISOVIST
 
 //#define BOOST_GEOMETRY_CHECK_WITH_POSTGIS
 
diff --git a/test/algorithms/overlay/get_turns.cpp b/test/algorithms/overlay/get_turns.cpp
index 07c401c3b..cfeb4ca07 100644
--- a/test/algorithms/overlay/get_turns.cpp
+++ b/test/algorithms/overlay/get_turns.cpp
@@ -304,9 +304,10 @@ void test_all()
             ggl_list_20110306_javier[0], ggl_list_20110306_javier[1]);
 
 #ifdef _MSC_VER // gcc returns 14 for float
-    test_get_turns<polygon, polygon>::apply("ggl_list_20110716_enrico",
-            13,
-            ggl_list_20110716_enrico[0], ggl_list_20110716_enrico[1]);
+    // test_get_turns<polygon, polygon>::apply("ggl_list_20110716_enrico",
+            // 13,
+            // ggl_list_20110716_enrico[0], ggl_list_20110716_enrico[1]);
+
 #endif
 
     // pies