diff --git a/client/syncclusterconnection.h b/client/syncclusterconnection.h
index 4292e3dbe16..239760b67d9 100644
--- a/client/syncclusterconnection.h
+++ b/client/syncclusterconnection.h
@@ -16,6 +16,7 @@
  *    limitations under the License.
  */
 
+#pragma once
 
 #include "../pch.h"
 #include "dbclient.h"
diff --git a/util/concurrency/thread_pool.h b/util/concurrency/thread_pool.h
index f0fe8f1e1dd..31e06430088 100644
--- a/util/concurrency/thread_pool.h
+++ b/util/concurrency/thread_pool.h
@@ -15,6 +15,8 @@
  *    limitations under the License.
  */
 
+#pragma once
+
 #include <boost/function.hpp>
 #include <boost/bind.hpp>
 #undef assert