diff --git a/lib/config/expression.cpp b/lib/config/expression.cpp
index 6276e242d..d411fada1 100644
--- a/lib/config/expression.cpp
+++ b/lib/config/expression.cpp
@@ -20,6 +20,7 @@
 #include "config/expression.h"
 #include "config/expressionlist.h"
 #include "base/objectlock.h"
+#include "base/utility.h"
 #include "base/array.h"
 #include <sstream>
 #include <boost/tuple/tuple.hpp>
diff --git a/lib/config/expression.h b/lib/config/expression.h
index 0bf2a1e83..35be30fe9 100644
--- a/lib/config/expression.h
+++ b/lib/config/expression.h
@@ -24,6 +24,7 @@
 #include "config/debuginfo.h"
 #include "base/dictionary.h"
 #include <iostream>
+#include <vector>
 
 namespace icinga
 {