diff --git a/src/software/thunderscope/gl/widgets/gl_field_toolbar.py b/src/software/thunderscope/gl/widgets/gl_field_toolbar.py
index bac5edd80d..6e792c727a 100644
--- a/src/software/thunderscope/gl/widgets/gl_field_toolbar.py
+++ b/src/software/thunderscope/gl/widgets/gl_field_toolbar.py
@@ -107,7 +107,7 @@ def __init__(
         )
         self.help_button.setStyleSheet(self.get_button_style())
         self.help_button.clicked.connect(
-            lambda: QMessageBox.information(self, "Help", THUNDERSCOPE_HELP_TEXT)
+            lambda: QMessageBox.information(self.window(), "Help", THUNDERSCOPE_HELP_TEXT)
         )
 
         # Setup pause button