diff --git a/ApplicationCode/Application/Tools/RiaDateStringParser.cpp b/ApplicationCode/Application/Tools/RiaDateStringParser.cpp
index 8910686b8e..cbb7102e9f 100644
--- a/ApplicationCode/Application/Tools/RiaDateStringParser.cpp
+++ b/ApplicationCode/Application/Tools/RiaDateStringParser.cpp
@@ -18,6 +18,7 @@
 
 #include "RiaDateStringParser.h"
 
+#include <algorithm>
 #include <vector>
 
 const std::string MONTH_NAMES[] =