diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ce19dfb6cf04..652192b0eba1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-05-07  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* gcc.dg/nextafter-2.c: Add c99_runtime effective target
+	and options.
+
 2018-05-06  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/85659
diff --git a/gcc/testsuite/gcc.dg/nextafter-2.c b/gcc/testsuite/gcc.dg/nextafter-2.c
index 36b7e3cfa1ad..ef34676fd7ee 100644
--- a/gcc/testsuite/gcc.dg/nextafter-2.c
+++ b/gcc/testsuite/gcc.dg/nextafter-2.c
@@ -1,6 +1,8 @@
 /* PR libstdc++/85466 */
 /* { dg-do run } */
+/* { dg-require-effective-target c99_runtime } */
 /* { dg-options "-O2 -fno-builtin" } */
 /* { dg-add-options ieee } */
+/* { dg-add-options c99_runtime } */
 
 #include "nextafter-1.c"