diff --git a/Code/Mantid/Framework/Kernel/src/ConfigService.cpp b/Code/Mantid/Framework/Kernel/src/ConfigService.cpp
index f018abd260c775652d1b2747b14a18b7407cbd27..d6baa76ec3803b73a3479b12ed2259465d871bcb 100644
--- a/Code/Mantid/Framework/Kernel/src/ConfigService.cpp
+++ b/Code/Mantid/Framework/Kernel/src/ConfigService.cpp
@@ -28,6 +28,7 @@
 
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/algorithm/string/join.hpp>
+#include <boost/regex.hpp>
 
 #include <fstream>
 #include <sstream>