MSVC fix

diff --git a/src/Environment/environment_ctrl.cxx b/src/Environment/environment_ctrl.cxx
index 940abce0d605353fdfa0041c2a663dfa0c783cc0..73c9d7b0407038a8a582772e0041a9a6f748155e 100644 (file)
--- a/src/Environment/environment_ctrl.cxx
+++ b/src/Environment/environment_ctrl.cxx
@@ -23,6 +23,8 @@
 #include <simgear/debug/logstream.hxx>
 
 #include <stdlib.h>
+#include <algorithm>
+
 #include <Main/fg_props.hxx>
 
 #include "environment_ctrl.hxx"