diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2944394d67a..4c81b17e76e 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2015-12-04  Nathan Sidwell  <nathan@acm.org>
+
+	* gcc.dg/graphite/id-28.c: Requires pthreads.
+
 2015-12-04  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc.dg/vla-24.c: New test.
diff --git a/gcc/testsuite/gcc.dg/graphite/id-28.c b/gcc/testsuite/gcc.dg/graphite/id-28.c
index 941a1e4f543..3c4bd2322c4 100644
--- a/gcc/testsuite/gcc.dg/graphite/id-28.c
+++ b/gcc/testsuite/gcc.dg/graphite/id-28.c
@@ -1,4 +1,5 @@
 /* { dg-options "-fcilkplus -floop-nest-optimize -O3" } */
+/* { dg-require-effective-target pthread } */
 
 #if HAVE_IO
 #include <stdio.h>