--- a/eric6/Preferences/__init__.py	Sat May 01 14:27:38 2021 +0200
+++ b/eric6/Preferences/__init__.py	Thu Jun 03 11:39:23 2021 +0200
@@ -201,7 +201,7 @@
         "ProxyPassword/Http": "",
         "ProxyPassword/Https": "",
         "ProxyPassword/Ftp": "",
-        "ProxyType/Ftp": E5FtpProxyType.NoProxy,
+        "ProxyType/Ftp": E5FtpProxyType.NO_PROXY,
         "ProxyAccount/Ftp": "",
         "ProxyExceptions": "localhost,127.0.0.,::1",
         
@@ -1933,12 +1933,15 @@
             "UI/" + key, prefClass.uiDefaults[key]))
     elif key in ["TabViewManagerFilenameLength", "CaptionFilenameLength",
                  "ProxyPort/Http", "ProxyPort/Https", "ProxyPort/Ftp",
-                 "ProxyType/Ftp", "OpenOnStartup",
-                 "PerformVersionCheck", "RecentNumber", "NotificationTimeout",
-                 "SidebarDelay", "KeyboardInputInterval",
-                 "BackgroundServiceProcesses", "MinimumMessageTypeSeverity"]:
+                 "OpenOnStartup", "PerformVersionCheck", "RecentNumber",
+                 "NotificationTimeout", "SidebarDelay",
+                 "KeyboardInputInterval", "BackgroundServiceProcesses",
+                 "MinimumMessageTypeSeverity"]:
         return int(prefClass.settings.value(
             "UI/" + key, prefClass.uiDefaults[key]))
+    elif key in ["ProxyType/Ftp", ]:
+        return E5FtpProxyType(int(prefClass.settings.value(
+            "UI/" + key, prefClass.uiDefaults[key].value)))
     elif key in ["ProxyPassword/Http", "ProxyPassword/Https",
                  "ProxyPassword/Ftp", ]:
         from Utilities.crypto import pwConvert
@@ -2015,6 +2018,9 @@
                  "ProxyPassword/Ftp", ]:
         from Utilities.crypto import pwConvert
         prefClass.settings.setValue("UI/" + key, pwConvert(value, encode=True))
+    elif key in ["ProxyType/Ftp", ]:
+        # value is an enum.Enum derived item
+        prefClass.settings.setValue("UI/" + key, value.value)
     else:
         prefClass.settings.setValue("UI/" + key, value)