diff --git a/gtsam/base/timing.cpp b/gtsam/base/timing.cpp
index 154a564db..b43595066 100644
--- a/gtsam/base/timing.cpp
+++ b/gtsam/base/timing.cpp
@@ -19,9 +19,10 @@
 #include <gtsam/base/debug.h>
 #include <gtsam/base/timing.h>
 
+#include <algorithm>
+#include <cassert>
 #include <cmath>
 #include <cstddef>
-#include <cassert>
 #include <iomanip>
 #include <iostream>
 #include <map>