diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5c33c35892b..29808a14d01 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-04-20  Bill Schmidt  <wschmidt@linux.ibm.com>
+
+	* g++.dg/ext/undef-bool-1.C: Require lp64.
+	* gcc.target/powerpc/undef-bool-2.c: Likewise.
+
 2018-04-20  Jeff Law  <law@redhat.com>
 
 	* gcc.dg/stack-check-5.c: Improve dg-skip-if selector for the
diff --git a/gcc/testsuite/g++.dg/ext/undef-bool-1.C b/gcc/testsuite/g++.dg/ext/undef-bool-1.C
index 096ec818f77..716e06c1ce4 100644
--- a/gcc/testsuite/g++.dg/ext/undef-bool-1.C
+++ b/gcc/testsuite/g++.dg/ext/undef-bool-1.C
@@ -1,5 +1,6 @@
 /* { dg-do compile { target { powerpc*-*-* } } } */
 /* { dg-options "-O2 -DNO_WARN_X86_INTRINSICS -mvsx" } */
+/* { dg-require-effective-target lp64 } */
 
 /* Test to ensure that "bool" gets undef'd in xmmintrin.h when
    we require strict ANSI.  */
diff --git a/gcc/testsuite/gcc.target/powerpc/undef-bool-2.c b/gcc/testsuite/gcc.target/powerpc/undef-bool-2.c
index 8417813d15b..bb8e4260aa0 100644
--- a/gcc/testsuite/gcc.target/powerpc/undef-bool-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/undef-bool-2.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O2 -std=c11 -DNO_WARN_X86_INTRINSICS -mvsx" } */
+/* { dg-require-effective-target lp64 } */
 
 /* Test to ensure that "bool" gets undef'd in xmmintrin.h when
    we require strict ANSI.  Subsequent use of bool needs stdbool.h.