diff --git a/src/web/FileUtils.C b/src/web/FileUtils.C
index 122e2a948..338bf3501 100644
--- a/src/web/FileUtils.C
+++ b/src/web/FileUtils.C
@@ -6,6 +6,7 @@
 
 #include "web/FileUtils.h"
 
+#include <boost/filesystem/directory.hpp>
 #include <boost/filesystem/operations.hpp>
 
 #include "web/WebUtils.h"