diff --git a/tests/qttest/tst_diagramtoolbarsettings.cpp b/tests/qttest/tst_diagramtoolbarsettings.cpp
index 9c77cc8d9..87fb12143 100644
--- a/tests/qttest/tst_diagramtoolbarsettings.cpp
+++ b/tests/qttest/tst_diagramtoolbarsettings.cpp
@@ -21,6 +21,7 @@
 
 #include <QAction>
 #include <QComboBox>
+#include <QCoreApplication>
 #include <QListWidget>
 #include <QPushButton>
 #include <QSettings>
@@ -86,6 +87,11 @@ private slots:
 	void initTestCase()
 	{
 		QStandardPaths::setTestModeEnabled(true);
+			//A scope of this test's own. Without an organization name,
+			//QSettings on Windows has no registry key: it drops every
+			//write and reads only defaults.
+		QCoreApplication::setOrganizationName(QStringLiteral("QElectroTech-tst_diagramtoolbarsettings"));
+		QCoreApplication::setApplicationName(QStringLiteral("tst_diagramtoolbarsettings"));
 		clearSettings();
 			//A few of the diagram editor's commands, as it registers them
 		for (const QString &id : {QStringLiteral("diagrameditor.copy"),
diff --git a/tests/qttest/tst_gesturesettings.cpp b/tests/qttest/tst_gesturesettings.cpp
index b06930ab5..387be1538 100644
--- a/tests/qttest/tst_gesturesettings.cpp
+++ b/tests/qttest/tst_gesturesettings.cpp
@@ -22,6 +22,7 @@
 
 #include <QAction>
 #include <QComboBox>
+#include <QCoreApplication>
 #include <QDropEvent>
 #include <QListWidget>
 #include <QMainWindow>
@@ -64,6 +65,11 @@ private slots:
 	void initTestCase()
 	{
 		QStandardPaths::setTestModeEnabled(true);
+			//A scope of this test's own. Without an organization name,
+			//QSettings on Windows has no registry key: it drops every
+			//write and reads only defaults.
+		QCoreApplication::setOrganizationName(QStringLiteral("QElectroTech-tst_gesturesettings"));
+		QCoreApplication::setApplicationName(QStringLiteral("tst_gesturesettings"));
 		QSettings().remove(QStringLiteral("diagrameditor"));
 		addCommand(QStringLiteral("diagrameditor.copy"), QStringLiteral("Copier"));
 		addCommand(QStringLiteral("diagrameditor.cut"), QStringLiteral("Couper"));
diff --git a/tests/qttest/tst_toolbarsettings.cpp b/tests/qttest/tst_toolbarsettings.cpp
index 184b773d1..d9f90246d 100644
--- a/tests/qttest/tst_toolbarsettings.cpp
+++ b/tests/qttest/tst_toolbarsettings.cpp
@@ -20,6 +20,7 @@
 
 #include <QCheckBox>
 #include <QComboBox>
+#include <QCoreApplication>
 #include <QDockWidget>
 #include <QMainWindow>
 #include <QSettings>
@@ -48,6 +49,11 @@ private slots:
 	void initTestCase()
 	{
 		QStandardPaths::setTestModeEnabled(true);
+			//A scope of this test's own. Without an organization name,
+			//QSettings on Windows has no registry key: it drops every
+			//write and reads only defaults.
+		QCoreApplication::setOrganizationName(QStringLiteral("QElectroTech-tst_toolbarsettings"));
+		QCoreApplication::setApplicationName(QStringLiteral("tst_toolbarsettings"));
 		QSettings().remove(QStringLiteral("toolbars"));
 
 		m_window = new QMainWindow();