diff --git a/src/python/classes/mainwindow.py b/src/python/classes/mainwindow.py
index e8ec7c6..b63ceda 100644
--- a/src/python/classes/mainwindow.py
+++ b/src/python/classes/mainwindow.py
@@ -55,9 +55,25 @@ class MainWindow(QMainWindow, Ui_MainWindow):
 
     def test_data(self):
         self.line_edit_audio_1.setText('./src/sounds/oba_kanały.mp3')
+
+        pixmap1 = QPixmap('./src/gui/images/both.png')
+        scaled_pixmap1 = pixmap1.scaled(pixmap1.size(), Qt.KeepAspectRatio)
+        self.preview_label_avatar_1.setPixmap(scaled_pixmap1)
         self.preview_label_avatar_1.setProperty('path', './src/gui/images/both.png')
+
+        pixmap2 = QPixmap('./src/gui/images/none.png')
+        scaled_pixmap2 = pixmap2.scaled(pixmap2.size(), Qt.KeepAspectRatio)
+        self.preview_label_avatar_2.setPixmap(scaled_pixmap2)
         self.preview_label_avatar_2.setProperty('path', './src/gui/images/none.png')
+
+        pixmap3 = QPixmap('./src/gui/images/left.png')
+        scaled_pixmap3 = pixmap3.scaled(pixmap3.size(), Qt.KeepAspectRatio)
+        self.preview_label_avatar_3.setPixmap(scaled_pixmap3)
         self.preview_label_avatar_3.setProperty('path', './src/gui/images/left.png')
+
+        pixmap4 = QPixmap('./src/gui/images/right.png')
+        scaled_pixmap4 = pixmap4.scaled(pixmap4.size(), Qt.KeepAspectRatio)
+        self.preview_label_avatar_4.setPixmap(scaled_pixmap4)
         self.preview_label_avatar_4.setProperty('path', './src/gui/images/right.png')
 
     def open_image_import(self, image_number: int):