diff --git a/src/libs/vlayout/testpath.h b/src/libs/vlayout/testpath.h
index 5d5d09855..b3e92c01b 100644
--- a/src/libs/vlayout/testpath.h
+++ b/src/libs/vlayout/testpath.h
@@ -59,6 +59,16 @@ void DumpVector(const QVector<T> &points, const QString &templateName=QString())
 
     if (temp.open())
     {
+#if defined(Q_OS_LINUX)
+    #if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+//        On Linux, QTemporaryFile will attempt to create unnamed temporary
+//        files. If that succeeds, open() will return true but exists() will be
+//        false. If you call fileName() or any function that calls it,
+//        QTemporaryFile will give the file a name, so most applications will
+//        not see a difference.
+        temp.fileName(); // call to create a file on disk
+    #endif
+#endif
         QJsonObject vectorObject;
         VectorToJson(points, vectorObject);
         QJsonDocument vector(vectorObject);
diff --git a/src/libs/vpatterndb/testpassmark.cpp b/src/libs/vpatterndb/testpassmark.cpp
index 0a7d7d189..b43597bbc 100644
--- a/src/libs/vpatterndb/testpassmark.cpp
+++ b/src/libs/vpatterndb/testpassmark.cpp
@@ -67,6 +67,16 @@ void DumpPassmarkData(const VPiecePassmarkData &data, const QString &templateNam
 
     if (temp.open())
     {
+#if defined(Q_OS_LINUX)
+    #if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+//        On Linux, QTemporaryFile will attempt to create unnamed temporary
+//        files. If that succeeds, open() will return true but exists() will be
+//        false. If you call fileName() or any function that calls it,
+//        QTemporaryFile will give the file a name, so most applications will
+//        not see a difference.
+        temp.fileName(); // call to create a file on disk
+    #endif
+#endif
         QJsonObject dataObject
         {
             {"data", data.toJson()},
@@ -92,6 +102,16 @@ void DumpPassmarkShape(const QVector<QLineF> &shape, const QString &templateName
 
     if (temp.open())
     {
+#if defined(Q_OS_LINUX)
+    #if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+//        On Linux, QTemporaryFile will attempt to create unnamed temporary
+//        files. If that succeeds, open() will return true but exists() will be
+//        false. If you call fileName() or any function that calls it,
+//        QTemporaryFile will give the file a name, so most applications will
+//        not see a difference.
+        temp.fileName(); // call to create a file on disk
+    #endif
+#endif
         QJsonObject shapeObject
         {
             {"shape", PassmarkShapeToJson(shape)},
diff --git a/src/libs/vpatterndb/vpiece.cpp b/src/libs/vpatterndb/vpiece.cpp
index 3aa2e566b..959cca32f 100644
--- a/src/libs/vpatterndb/vpiece.cpp
+++ b/src/libs/vpatterndb/vpiece.cpp
@@ -1178,6 +1178,16 @@ void VPiece::DumpPiece(const VPiece &piece, const VContainer *data)
     temp.setAutoRemove(false); // Remove dump manually
     if (temp.open())
     {
+#if defined(Q_OS_LINUX)
+    #if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
+//        On Linux, QTemporaryFile will attempt to create unnamed temporary
+//        files. If that succeeds, open() will return true but exists() will be
+//        false. If you call fileName() or any function that calls it,
+//        QTemporaryFile will give the file a name, so most applications will
+//        not see a difference.
+        temp.fileName(); // call to create a file on disk
+    #endif
+#endif
         QJsonObject testCase
         {
             {"bd", piece.DBToJson(data)},