diff --git a/tests/span_tests.cpp b/tests/span_tests.cpp
index b38b4eb..e8c06e6 100644
--- a/tests/span_tests.cpp
+++ b/tests/span_tests.cpp
@@ -506,15 +506,15 @@ TEST_CASE("from_std_array_constructor")
         CHECK((s.size() == narrow_cast<ptrdiff_t>(arr.size()) && s.data() == arr.data()));
     }
 
-    // This test checks for the bug found in gcc 6.1, 6.2, 6.3, 7.1, 7.2, 7.3 - issue #590
+    // This test checks for the bug found in gcc 6.1, 6.2, 6.3, 6.4, 6.5 7.1, 7.2, 7.3 - issue #590
     {
         span<int> s1 = make_span(arr);
 
         static span<int> s2;
         s2 = s1;
 
-    #if __GNUC__ == 6 && __GNUC_MINOR__ == 4 && __GNUC_PATCHLEVEL__ == 0 && defined(__OPTIMIZE__)
-        // Known to be broken in gcc 6.4 with optimizations
+    #if __GNUC__ == 6 && (__GNUC_MINOR__ == 4 || __GNUC_MINOR__ == 5) && __GNUC_PATCHLEVEL__ == 0 && defined(__OPTIMIZE__)
+        // Known to be broken in gcc 6.4 and 6.5 with optimizations
         // Issue in gcc: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83116
         CHECK(s1.size() == 4);
         CHECK(s2.size() == 0);