diff --git a/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp b/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp
index 54c2a4b..ea35925 100644
--- a/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp
+++ b/test/std/containers/unord/unord.multiset/unord.multiset.cnstr/deduct.fail.cpp
@@ -9,6 +9,7 @@
 // <unordered_set>
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // UNSUPPORTED: libcpp-no-deduction-guides
+// XFAIL: clang-6, apple-clang-9.0, apple-clang-9.1, apple-clang-10.0
 
 // template<class InputIterator,
 //        class Hash = hash<iter-value-type<InputIterator>>,
diff --git a/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp b/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp
index d4e5337..76fbd20 100644
--- a/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp
+++ b/test/std/containers/unord/unord.set/unord.set.cnstr/deduct.fail.cpp
@@ -9,6 +9,7 @@
 // <unordered_set>
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // UNSUPPORTED: libcpp-no-deduction-guides
+// XFAIL: clang-6, apple-clang-9.0, apple-clang-9.1, apple-clang-10.0
 
 // template<class InputIterator,
 //        class Hash = hash<iter-value-type<InputIterator>>,