diff --git a/components/lazmapviewer/example/main.lfm b/components/lazmapviewer/example/main.lfm
index e4891b287..3c80a34ee 100644
--- a/components/lazmapviewer/example/main.lfm
+++ b/components/lazmapviewer/example/main.lfm
@@ -387,6 +387,7 @@ object MainForm: TMainForm
     Align = alClient
     CacheOnDisk = True
     CachePath = 'cache/'
+    DownloadEngine = MapView.BuiltIn
     InactiveColor = clWhite
     MapProvider = 'OpenStreetMap Mapnik'
     UseThreads = True
diff --git a/components/lazmapviewer/lazmapviewerpkg.pas b/components/lazmapviewer/lazmapviewerpkg.pas
index 31bb1d40c..9b44a94bd 100644
--- a/components/lazmapviewer/lazmapviewerpkg.pas
+++ b/components/lazmapviewer/lazmapviewerpkg.pas
@@ -4,12 +4,11 @@
 
 unit lazMapViewerPkg;
 
-{$warn 5023 off : no warning about unused units}
 interface
 
 uses
-  mvCache, mvDownloadEngine, mvdragobj, mvEngine, mvGeoNames, mvgpsobj, 
-  mvJobQueue, mvJobs, mvMapProvider, mvtypes, mvmapviewer, mvextradata, 
+  mvCache, mvDownloadEngine, mvDragObj, mvEngine, mvGeoNames, mvGpsObj, 
+  mvJobQueue, mvJobs, mvMapProvider, mvTypes, mvMapViewer, mvExtraData, 
   mvDLEFpc, mvMapViewerReg, LazarusPackageIntf;
 
 implementation
diff --git a/components/lazmapviewer/source/mvdlefpc.pas b/components/lazmapviewer/source/mvdlefpc.pas
index c8a01f50a..5bfb52333 100644
--- a/components/lazmapviewer/source/mvdlefpc.pas
+++ b/components/lazmapviewer/source/mvdlefpc.pas
@@ -36,16 +36,24 @@ type
   { TMVDEFPC }
 
   TMVDEFPC = class(TMvCustomDownloadEngine)
+  {$IF FPC_FullVersion >= 30101}
+  private
+    FUseProxy: Boolean;
+    FProxyHost: string;
+    FProxyPort: Word;
+    FProxyUserName: String;
+    FProxyPassWord: String;
+  {$IFEND}
   public
     procedure DownloadFile(const Url: string; AStream: TStream); override;
   {$IF FPC_FullVersion >= 30101}
   published
-    property UseProxy;
-    property ProxyHost;
-    property ProxyPort;
-    property ProxyUsername;
-    property ProxyPassword;
-  {$ENDIF}
+    property UseProxy: Boolean read FUseProxy write FUseProxy default false;
+    property ProxyHost: String read FProxyHost write FProxyHost;
+    property ProxyPort: Word read FProxyPort write FProxyPort;
+    property ProxyUsername: String read FProxyUserName write FProxyUserName;
+    property ProxyPassword: String read FProxyPassword write FProxyPassword;
+  {$IFEND}
   end;
 
 
@@ -63,14 +71,16 @@ begin
   inherited;
   http := TFpHttpClient.Create(nil);
   try
+   {$IF FPC_FullVersion >= 30000}
     http.AllowRedirect := true;
+   {$IFEND}
     http.AddHeader('User-Agent','Mozilla/5.0 (compatible; fpweb)');
    {$IF FPC_FullVersion >= 30101}
     if UseProxy then begin
-      http.Proxy.Host := ProxyHost;
-      http.Proxy.Port := ProxyPort;
-      http.Proxy.UserName := ProxyUserName;
-      http.Proxy.Password := ProxyPassword;
+      http.Proxy.Host := FProxyHost;
+      http.Proxy.Port := FProxyPort;
+      http.Proxy.UserName := FProxyUserName;
+      http.Proxy.Password := FProxyPassword;
     end;
    {$ENDIF}
     http.Get(Url, AStream);