diff --git a/test/std/re/re.alg/re.alg.match/exponential.pass.cpp b/test/std/re/re.alg/re.alg.match/exponential.pass.cpp
index f7d653c64..710c98040 100644
--- a/test/std/re/re.alg/re.alg.match/exponential.pass.cpp
+++ b/test/std/re/re.alg/re.alg.match/exponential.pass.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 // <regex>
+// XFAIL: c++03
 
 // template <class BidirectionalIterator, class Allocator, class charT, class traits>
 //     bool
diff --git a/test/std/re/re.alg/re.alg.search/exponential.pass.cpp b/test/std/re/re.alg/re.alg.search/exponential.pass.cpp
index c48cc94d1..eba76c808 100644
--- a/test/std/re/re.alg/re.alg.search/exponential.pass.cpp
+++ b/test/std/re/re.alg/re.alg.search/exponential.pass.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 // <regex>
+// XFAIL: c++03
 
 // template <class BidirectionalIterator, class Allocator, class charT, class traits>
 //     bool