diff --git a/config/menus_settings.cfg b/config/menus_settings.cfg
index 2f932836..27f66696 100644
--- a/config/menus_settings.cfg
+++ b/config/menus_settings.cfg
@@ -61,7 +61,6 @@ newmenu "Confirm tutorial"
 menuitem "Proceed with tutorial" [ tutstart 1 ]
 menuitem "3Cancel" [ closemenu "Confirm tutorial" ]
 
-
 new_gfx_quality = [
   if (= $arg1 6) [ // "INSANE!" gfx quality
     fsaa 8
@@ -404,6 +403,7 @@ menuitemslider "Font type: " 0 2 "$__fontsetting" 1 [ "Default" "v104" "Mono" ]
 menuitemslider "Mini-map background style: " 0 2 "$showmapbackdrop" 1 [ "Fully Transparent" "Black" "White/Transparent" ] [ showmapbackdrop $arg1 ]
 menuitemslider "Grid/Selection style: " 0 1 "$oldselstyle" 1 [ "triangles" "squares (default)" ] [ oldselstyle $arg1 ]
 menuitemcheckbox "Enable per-official map dynamic gamma: " "$dyngamma" [ dyngamma = $arg1 ]
+menuitemcheckbox "Enable compatibility with older cubescripts " "$compatibilitymode" [ compatibilitymode $arg1; echo (c 3) "You'll need to restart AC to take this setting in account."; ]
 menuitemtextinput "Set default gamma for this map: " "(at $ofc_gamma_list (findlist $defaultmaps (curmap 1)))" [ setgamma $arg1 ]
 
 // Reduced game violence mode...
diff --git a/source/src/main.cpp b/source/src/main.cpp
index 7a2f15e2..682ba923 100644
--- a/source/src/main.cpp
+++ b/source/src/main.cpp
@@ -936,6 +936,8 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
 }
 #endif
 
+VARP(compatibilitymode, 0, 1, 1); // FIXME : find a better place to put this ?
+
 int main(int argc, char **argv)
 {
     extern struct servercommandline scl;
@@ -1143,6 +1145,12 @@ int main(int argc, char **argv)
         firstrun = true;
     }
     if(identexists("afterinit")) execute("afterinit");
+    if(compatibilitymode)
+    {
+        persistidents = false;
+        exec("config/compatibility.cfg"); // exec after saved.cfg to get "compatibilitymode", but before user scripts..
+        persistidents = true;
+    }
     execfile("config/autoexec.cfg");
     execfile("config/auth.cfg");
     execute("addallfavcatmenus");  // exec here, to add all categories (including those defined in autoexec.cfg)