diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index f9e4c2d87dde708343662ade5f9a62fc2f1e1bf1..cd3bbca35baeafaad3e655ada8ebdd18dfe9f0b2 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2020-04-16  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Remove
+	name of unused parameter.
+
 2020-04-15  Jonathan Wakely  <jwakely@redhat.com>
 
 	* include/bits/fs_dir.h (file_status): Define operator== for C++20.
diff --git a/libstdc++-v3/testsuite/20_util/unsynchronized_pool_resource/allocate.cc b/libstdc++-v3/testsuite/20_util/unsynchronized_pool_resource/allocate.cc
index b3bb955db7ce3c048301001684b3cb34239cde2c..5bf20cf262c04aa9cd83e4a09cff6fc4810c3bcb 100644
--- a/libstdc++-v3/testsuite/20_util/unsynchronized_pool_resource/allocate.cc
+++ b/libstdc++-v3/testsuite/20_util/unsynchronized_pool_resource/allocate.cc
@@ -197,7 +197,7 @@ test06()
     void do_deallocate(void* p, std::size_t bytes, std::size_t align)
     { std::pmr::new_delete_resource()->deallocate(p, bytes, align); }
 
-    bool do_is_equal(const memory_resource& r) const noexcept
+    bool do_is_equal(const memory_resource&) const noexcept
     { return false; }
   };