diff --git a/src/filechooser.cpp b/src/filechooser.cpp
--- a/src/filechooser.cpp
+++ b/src/filechooser.cpp
@@ -24,14 +24,18 @@
 #include <QDialogButtonBox>
 #include <QDBusMetaType>
 #include <QDBusArgument>
+#include <QEventLoop>
 #include <QLoggingCategory>
 #include <QFile>
 #include <QPushButton>
+#include <QStandardPaths>
 #include <QVBoxLayout>
 #include <QUrl>
 
 #include <KLocalizedString>
 #include <KFileWidget>
+#include <KIO/Job>
+#include <KIO/CopyJob>
 
 Q_LOGGING_CATEGORY(XdgDesktopPortalKdeFileChooser, "xdp-kde-file-chooser")
 
@@ -202,6 +206,27 @@
            QUrl url = QUrl::fromLocalFile(filename);
            files << url.toDisplayString();
         }
+
+        for (const QUrl &url : fileDialog->m_fileWidget->selectedUrls()) {
+            // HACK we have to avoid returning until we copy the files
+            QEventLoop loop;
+            auto copyJob = KIO::copy(url, QUrl::fromLocalFile(QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation)));
+            connect(copyJob, &KIO::CopyJob::copyingDone, this, [&files, &loop] (KIO::Job *job, const QUrl &from, const QUrl &to, const QDateTime &mtime, bool directory, bool renamed) {
+                Q_UNUSED(job);
+                Q_UNUSED(from);
+                Q_UNUSED(mtime);
+                Q_UNUSED(directory);
+                Q_UNUSED(renamed);
+                files << to.toDisplayString();
+                loop.exit();
+            });
+            loop.exec();
+        }
+
+        if (files.isEmpty()) {
+            return 2;
+        }
+
         results.insert(QStringLiteral("uris"), files);
         return 0;
     }