diff --git a/examples/ISAM2_City10000.cpp b/examples/ISAM2_City10000.cpp
index 2c210ab44..b756fb1e1 100644
--- a/examples/ISAM2_City10000.cpp
+++ b/examples/ISAM2_City10000.cpp
@@ -27,8 +27,6 @@
 #include <gtsam/slam/dataset.h>
 #include <time.h>
 
-#include <boost/algorithm/string/classification.hpp>
-#include <boost/algorithm/string/split.hpp>
 #include <fstream>
 #include <string>
 #include <vector>