diff --git a/arangod/Aql/AstNode.cpp b/arangod/Aql/AstNode.cpp
index 375b3e5336..7d107c468d 100644
--- a/arangod/Aql/AstNode.cpp
+++ b/arangod/Aql/AstNode.cpp
@@ -43,6 +43,8 @@
 #include <iostream>
 #endif
 
+#include <array>
+
 using namespace triagens::aql;
 using JsonHelper = triagens::basics::JsonHelper;
 using Json = triagens::basics::Json;
diff --git a/arangod/VocBase/KeyGenerator.cpp b/arangod/VocBase/KeyGenerator.cpp
index f0c33ab083..7eb17ad5dd 100644
--- a/arangod/VocBase/KeyGenerator.cpp
+++ b/arangod/VocBase/KeyGenerator.cpp
@@ -39,6 +39,8 @@
 
 #include "VocBase/vocbase.h"
 
+#include <array>
+
 // -----------------------------------------------------------------------------
 // --SECTION--                                                 private variables
 // -----------------------------------------------------------------------------