diff --git a/src/qt/paymentserver.cpp b/src/qt/paymentserver.cpp
--- a/src/qt/paymentserver.cpp
+++ b/src/qt/paymentserver.cpp
@@ -316,7 +316,7 @@
     if (uri.hasQueryItem("r")) {
 #ifdef ENABLE_BIP70
         QByteArray temp;
-        temp.append(uri.queryItemValue("r"));
+        temp.append(uri.queryItemValue("r").toUtf8());
         QString decoded = QUrl::fromPercentEncoding(temp);
         QUrl fetchUrl(decoded, QUrl::StrictMode);