diff --git a/PerfTools/AllocMonitor/plugins/monitor_file_utilities.cc b/PerfTools/AllocMonitor/plugins/monitor_file_utilities.cc
index 7624463dfa385..359cfa8dfe01f 100644
--- a/PerfTools/AllocMonitor/plugins/monitor_file_utilities.cc
+++ b/PerfTools/AllocMonitor/plugins/monitor_file_utilities.cc
@@ -3,6 +3,7 @@
 
 #include <vector>
 #include <cassert>
+#include <algorithm>
 
 namespace {
   std::string const space{"  "};