--- a/src/squelch/condition.cc
+++ b/src/squelch/condition.cc
@@ -3,6 +3,8 @@
 
 #include <boost/algorithm/string/predicate.hpp>
 
+#include <map>
+
 #include "jsoncons_helpers.hpp"
 #include "tome/squelch/cursor.hpp"
 #include "tome/squelch/tree_printer.hpp"