diff --git a/src/qt/walletmodeltransaction.h b/src/qt/walletmodeltransaction.h
index cc1fe0e..63891f6 100644
--- a/src/qt/walletmodeltransaction.h
+++ b/src/qt/walletmodeltransaction.h
@@ -11,6 +11,8 @@
 
 #include <QObject>
 
+#include <memory>
+
 class SendCoinsRecipient;
 
 class CReserveKey;