diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index 77d89203b83..4534d790772 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -202,6 +202,11 @@
 #undef r
 #endif
 
+#if defined (__linux__) && defined (__powerpc__)
+// <asm/types.h> defines __vector128::u
+#undef u
+#endif
+
 #if defined (__linux__) && defined (__sparc__)
 #undef y
 #endif