diff --git a/Genshtab/ggc/karta_ggc_500m.zmp/GetUrlScript.txt b/Genshtab/ggc/karta_ggc_500m.zmp/GetUrlScript.txt
index d7035220..2c6e4a24 100644
--- a/Genshtab/ggc/karta_ggc_500m.zmp/GetUrlScript.txt
+++ b/Genshtab/ggc/karta_ggc_500m.zmp/GetUrlScript.txt
@@ -1,3 +1,13 @@
+var
+ r: integer;
+ BaseUrl: string;
 begin
-  ResultURL:=GetURLBase+'z'+inttostr(getz)+'/'+inttostr(getx div 1024)+'/x'+inttostr(getx)+'/'+inttostr(gety div 1024)+'/y'+inttostr(gety)+'.png';
-end.
+  r := random(2);
+
+  case r of
+   0: BaseUrl := GetURLBase;
+   1: BaseUrl := RegExprReplaceMatchSubStr(GetURLBase, '91.237.82.95:8088', 'maps.melda.ru');
+  end;
+
+  ResultURL:= BaseUrl+'z'+inttostr(getz)+'/'+inttostr(getx div 1024)+'/x'+inttostr(getx)+'/'+inttostr(gety div 1024)+'/y'+inttostr(gety)+'.png';
+end.
\ No newline at end of file
diff --git a/Genshtab/ggc/karta_ggc_500m.zmp/params.txt b/Genshtab/ggc/karta_ggc_500m.zmp/params.txt
index 9e2683a0..59e65c24 100644
--- a/Genshtab/ggc/karta_ggc_500m.zmp/params.txt
+++ b/Genshtab/ggc/karta_ggc_500m.zmp/params.txt
@@ -6,7 +6,7 @@ name_ru=ГосГисЦентр 500 м
 name=GosGisCentr 500 m
 name_uk=GosGisCentr 500 м
 NameInCache=ggc500m
-DefURLBase=http://91.237.82.95:8088/pub/ggc/500m/
+DefURLBase=http://91.237.82.95:8088/pub/ggc/500m.png/
 defaultContentType=image/png
 ParentSubMenu_ru=Генштаб\ГГЦ
 ParentSubMenu=Genshtab\GGC