diff --git a/README.md b/README.md
index 72aba3d..6e4d78f 100644
--- a/README.md
+++ b/README.md
@@ -121,6 +121,13 @@ To add launch entries for the default or all WSL distributions to the
 Explorer context menu, or remove them, run the respective script from the 
 Start Menu subfolder `WSLtty`.
 
+#### Icon ####
+
+Wsltty installation and the mintty terminal try to use the icon of the 
+respective WSL distribution. If it cannot be determined, a penguin icon 
+is used as a default. You can replace it with your preferred fallback icon 
+by replacing the icon file `%LOCALAPPDATA%\wsltty\wsl.ico`.
+
 #### Mintty settings ####
 
 Mintty can maintain its configuration file in various locations, 
diff --git a/install.bat b/install.bat
index 0cf8a57..0838842 100755
--- a/install.bat
+++ b/install.bat
@@ -28,9 +28,10 @@ copy "remove from context menu.lnk" "%installdir%"
 copy "configure WSL shortcuts.lnk" "%installdir%"
 copy "WSL Terminal.lnk" "%installdir%"
 copy "WSL Terminal %%.lnk" "%installdir%"
-copy wsl.ico "%installdir%"
 copy config-distros.sh "%installdir%"
 copy mkshortcut.vbs "%installdir%"
+rem allow persistent customization of default icon:
+if not exist "%installdir%"\wsl.ico copy wsl.ico "%installdir%"
 
 if not exist "%installdir%\bin" goto instbin
 rem move previous programs possibly in use out of the way