diff --git a/test/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp b/test/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp
index 8ef6d542d..69bcaf119 100644
--- a/test/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp
+++ b/test/algorithms/alg.sorting/alg.merge/merge_comp.pass.cpp
@@ -6,6 +6,8 @@
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+//
+// REQUIRES: long_tests
 
 // <algorithm>