diff --git a/src/third_party/qtsingleapplication/qtlocalpeer.cpp b/src/third_party/qtsingleapplication/qtlocalpeer.cpp
index 43e6bf42..e0ddc07d 100644
--- a/src/third_party/qtsingleapplication/qtlocalpeer.cpp
+++ b/src/third_party/qtsingleapplication/qtlocalpeer.cpp
@@ -31,6 +31,7 @@
 
 #include <QCoreApplication>
 #include <QTime>
+#include <QDataStream>
 
 #if defined(Q_OS_WIN)
 #include <QLibrary>