diff --git a/tools/logon.cmd b/tools/logon.cmd
index ce607a3..a3af93e 100644
--- a/tools/logon.cmd
+++ b/tools/logon.cmd
@@ -473,6 +473,11 @@ rem re-create "Pictures" in case it was deleted ...
 echo Creating "Pictures" folder for snipping tool ...
 mkdir "%USERPROFILE%"\Pictures 2>nul
 
+rem HeidiSQL should be in english - always!
+echo Setting language of HeidiSQL to english ...
+reg add "HKCU\SOFTWARE\HeidiSQL" ^
+    /v "Language" /d "en" /t REG_SZ /f 1>nul
+
 rem workstation service should run always ...
 echo.
 echo Starting the workstation service ...