diff --git a/code/nel/tools/build_gamedata/translation/make_merge_wk.py b/code/nel/tools/build_gamedata/translation/make_merge_wk.py
index 2352a8490..dee324f07 100644
--- a/code/nel/tools/build_gamedata/translation/make_merge_wk.py
+++ b/code/nel/tools/build_gamedata/translation/make_merge_wk.py
@@ -72,7 +72,7 @@ except Exception, e:
 printLog(log, ">>> Mark diffs as translated <<<")
 diffFiles = os.listdir("diff")
 for diffFile in diffFiles:
-	if "_wk_diff_" in diffFile:
+	if "wk_diff_" in diffFile:
 		printLog(log, "DIFF " + "diff/" + diffFile)
 		subprocess.call([ TranslationTools, "crop_lines", "diff/" + diffFile, "3" ])