diff --git a/nel/tools/build_gamedata/processes/zone/2_build.py b/nel/tools/build_gamedata/processes/zone/2_build.py
index cb9287c36..6dca1c0d5 100755
--- a/nel/tools/build_gamedata/processes/zone/2_build.py
+++ b/nel/tools/build_gamedata/processes/zone/2_build.py
@@ -145,12 +145,27 @@ else:
 	files = findFiles(log, ExportBuildDirectory + "/" + ZoneWeldBuildDirectory, "", ".zonenhw")
 	for file in files:
 		sourceFile = ExportBuildDirectory + "/" + ZoneWeldBuildDirectory + "/" + file
-		destFile = ExportBuildDirectory + "/" + ZoneWeldBuildDirectory + "/" + os.path.basename(file)[0:-len(".zonenhw")] + ".zonew"
+		destFile = ExportBuildDirectory + "/" + ZoneWeldBuildDirectory + "/" + os.path.basename(file)[0:-len(".zonenhw")] + ".zone"
 		if needUpdateLogRemoveDest(log, sourceFile, destFile):
 			callParallelProcess([ ZoneElevation, sourceFile, destFile, "--land", land, "--heightmap", heightMap1, "--zfactor", LigoExportZFactor1, "--heightmap2", heightMap2, "--zfactor2", LigoExportZFactor2 ])
 	flushParallelProcesses()
 printLog(log, "")
 
+printLog(log, ">>> Re-weld zone with heightmap <<<")
+if ZoneWelder == "":
+	toolLogFail(log, ZoneWelderTool, ToolSuffix)
+elif ExecTimeout == "":
+	toolLogFail(log, ExecTimeoutTool, ToolSuffix)
+else:
+	mkPath(log, ExportBuildDirectory + "/" + ZoneWeldBuildDirectory)
+	files = findFiles(log, ExportBuildDirectory + "/" + ZoneWeldBuildDirectory, "", ".zone")
+	for file in files:
+		sourceFile = ExportBuildDirectory + "/" + ZoneWeldBuildDirectory + "/" + file
+		destFile = ExportBuildDirectory + "/" + ZoneWeldBuildDirectory + "/" + os.path.basename(file)[0:-len(".zone")] + ".zonew"
+		if needUpdateLogRemoveDest(log, sourceFile, destFile):
+			subprocess.call([ ExecTimeout, str(ZoneBuildWeldTimeout), ZoneWelder, sourceFile, destFile ])
+printLog(log, "")
+
 log.close()