diff --git a/source/shared_lib/sources/platform/posix/miniftpclient.cpp b/source/shared_lib/sources/platform/posix/miniftpclient.cpp
index 076ef4f97..19d4e8c75 100644
--- a/source/shared_lib/sources/platform/posix/miniftpclient.cpp
+++ b/source/shared_lib/sources/platform/posix/miniftpclient.cpp
@@ -71,11 +71,14 @@ void FTPClientThread::getMapFromServer(string mapFileName) {
 
     FTP_Client_ResultType result = ftp_crt_FAIL;
 
+    string destFileExt = "";
     string destFile = this->mapsPath.second + mapFileName;
     if(EndsWith(destFile,".mgm") == false && EndsWith(destFile,".gbm") == false) {
-        destFile += ".mgm";
+        destFileExt = ".mgm";
+        destFile += destFileExt;
     }
 
+
     struct FtpFile ftpfile = {
         destFile.c_str(), /* name to store the file as if succesful */
         NULL
@@ -90,7 +93,7 @@ void FTPClientThread::getMapFromServer(string mapFileName) {
          */
 
         char szBuf[1024]="";
-        sprintf(szBuf,"ftp://maps:mg_ftp_server@%s/%s",serverUrl.c_str(),mapFileName.c_str());
+        sprintf(szBuf,"ftp://maps:mg_ftp_server@%s/%s%s",serverUrl.c_str(),mapFileName.c_str(),destFileExt.c_str());
 
         curl_easy_setopt(curl, CURLOPT_URL,szBuf);
         /* Define our callback to get called when there's data to be written */
@@ -110,7 +113,7 @@ void FTPClientThread::getMapFromServer(string mapFileName) {
             /* we failed */
             fprintf(stderr, "curl told us %d\n", res);
 
-            sprintf(szBuf,"ftp://maps_custom:mg_ftp_server@%s/%s",serverUrl.c_str(),mapFileName.c_str());
+            sprintf(szBuf,"ftp://maps_custom:mg_ftp_server@%s/%s%s",serverUrl.c_str(),mapFileName.c_str(),destFileExt.c_str());
 
             curl_easy_setopt(curl, CURLOPT_URL,szBuf);
             /* Define our callback to get called when there's data to be written */