diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index bfaeb703223d..f179fc90b196 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,7 @@
 2016-10-13  Jonathan Wakely  <jwakely@redhat.com>
 
+	* testsuite/experimental/algorithm/sample.cc: Add missing header.
+
 	* include/experimental/propagate_const (element_type): Qualify
 	declval.
 
diff --git a/libstdc++-v3/testsuite/experimental/algorithm/sample.cc b/libstdc++-v3/testsuite/experimental/algorithm/sample.cc
index 19681d7aa69d..0d84e9dd7f42 100644
--- a/libstdc++-v3/testsuite/experimental/algorithm/sample.cc
+++ b/libstdc++-v3/testsuite/experimental/algorithm/sample.cc
@@ -22,6 +22,7 @@
 #include <sstream>
 #include <forward_list>
 #include <vector>
+#include <random>
 #include <testsuite_hooks.h>
 
 std::mt19937 rng;