diff --git a/src/lib/orderedjson.cpp b/src/lib/orderedjson.cpp
index cd92c7aa..4d3a460c 100644
--- a/src/lib/orderedjson.cpp
+++ b/src/lib/orderedjson.cpp
@@ -26,6 +26,8 @@
 #include <cstdio>
 #include <limits>
 
+#include <QJsonDocument>
+
 namespace poryjson {
 
 static const int max_depth = 200;