diff --git a/CMakeLists.txt b/CMakeLists.txt
index 48a19664e..95de76aa5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -155,6 +155,7 @@ set(SOURCES
         util/comparator.cc
         util/crc32c.cc
         util/db_info_dumper.cc
+        util/delete_scheduler_impl.cc
         util/db_test_util.cc
         util/dynamic_bloom.cc
         util/env.cc