--- a/eric6/MicroPython/EspDevices.py	Sun Aug 25 15:30:11 2019 +0200
+++ b/eric6/MicroPython/EspDevices.py	Mon Aug 26 12:43:26 2019 +0200
@@ -145,7 +145,7 @@
         Private slot to erase the device flash memory.
         """
         ok = E5MessageBox.yesNo(
-            self,
+            self.microPython,
             self.tr("Erase Flash"),
             self.tr("""Shall the flash of the selected device really be"""
                     """ erased?"""))