diff --git a/test/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp b/test/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp
index f6b868211..1d392950d 100644
--- a/test/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp
+++ b/test/language.support/support.limits/limits/numeric.limits.members/is_iec559.pass.cpp
@@ -45,4 +45,9 @@ int main()
     test<float, true>();
     test<double, true>();
     test<long double, true>();
+#if (defined(__ppc__) || defined(__ppc64__))
+    test<long double, false>();
+#else
+     test<long double, true>();
+#endif
 }