diff --git a/packages/firefox-config.xml b/packages/firefox-config.xml
index 21b988f..8f75eb9 100644
--- a/packages/firefox-config.xml
+++ b/packages/firefox-config.xml
@@ -2,7 +2,7 @@
 <packages>
     <package id="firefox-config" 
              name="Configuration Firefox"
-             revision="2" 
+             revision="3" 
              priority="10" 
              reboot="false">
 
@@ -12,11 +12,13 @@
         <variable architecture='x64' name='PROG' value='%PROGRAMFILES(x86)%\Mozilla Firefox' />
 
         <install cmd='%COMSPEC% /C copy /Y "%SOFTWARE%\firefox\autoconf.js" "%PROG%\defaults\pref\"' />
+        <install cmd='%COMSPEC% /C copy /Y "%SOFTWARE%\firefox\override.ini" "%PROG%\"' />
         <install cmd='%COMSPEC% /C copy /Y "%SETTINGS%\firefox\firefox.cfg" "%PROG%\"' />
 
         <upgrade include="install" />
 
         <remove cmd='%COMSPEC% /C del /F "%PROG%\defaults\pref\autoconf.js"' />
+        <remove cmd='%COMSPEC% /C del /F "%PROG%\override.ini"' />
         <remove cmd='%COMSPEC% /C del /F "%PROG%\firefox.cfg"' />
     </package>
 </packages>
diff --git a/softwares/override.ini b/softwares/override.ini
new file mode 100644
index 0000000..f58d115
--- /dev/null
+++ b/softwares/override.ini
@@ -0,0 +1,2 @@
+[XRE]
+EnableProfileMigrator=false