diff --git a/gui/dialogs.py b/gui/dialogs.py
index f7e51d1..703baeb 100644
--- a/gui/dialogs.py
+++ b/gui/dialogs.py
@@ -57,13 +57,13 @@ class ExportKontorDialog(QDialog):
 
     def change_export_type(self, text):
         self.current_export_type = text
-        self.label.setText(f"Export DB to data.{self.export_options[text]["ext"]}")
+        self.label.setText(f'Export DB to data.{self.export_options[text]["ext"]}')
 
     def select_file(self):
         file_dialog = QFileDialog()
         file_dialog.setFileMode(QFileDialog.FileMode.AnyFile)
         file_dialog.setDefaultSuffix(self.export_options[self.current_export_type]["ext"])
-        file_dialog.setNameFilter(f"*{self.export_options[self.current_export_type]["ext"]}")
+        file_dialog.setNameFilter(f'*{self.export_options[self.current_export_type]["ext"]}')
         if file_dialog.exec():
             self.file_name = file_dialog.selectedFiles()[0]
             export_file = Path(self.file_name)