diff --git a/Stream_support/test/Stream_support/data/binary-issue-6374.stl b/Stream_support/test/Stream_support/data/binary-issue-6374.stl
new file mode 100644
index 00000000000..82709ac4a42
Binary files /dev/null and b/Stream_support/test/Stream_support/data/binary-issue-6374.stl differ
diff --git a/Stream_support/test/Stream_support/test_STL.cpp b/Stream_support/test/Stream_support/test_STL.cpp
index 9fd3dffe5f0..705ea72f7e5 100644
--- a/Stream_support/test/Stream_support/test_STL.cpp
+++ b/Stream_support/test/Stream_support/test_STL.cpp
@@ -79,8 +79,8 @@ int main(int argc, char** argv)
   assert(ok);
   std::cout << points.size() << " points and " << polygons.size() << " polygons" << std::endl;
 
-  if(argc == 0)
-    assert(points.size() == 434 && polygons.size() == 864);
+  if(argc == 1)
+    assert(points.size() == 4 && polygons.size() == 4);
 
   points.clear();
   polygons.clear();
@@ -129,6 +129,16 @@ int main(int argc, char** argv)
 
   further_tests();
 
+  // issue 6374
+  if(argc == 1)
+  {
+    points.clear();
+    polygons.clear();
+    bool ok = CGAL::IO::read_STL("data/binary-issue-6374.stl", points, polygons, CGAL::parameters::verbose(true));
+    assert(ok);
+    assert(points.size()==8 && polygons.size()==12);
+  }
+
   std::cout << "Done!" << std::endl;
   return EXIT_SUCCESS;
 }