diff --git a/tools/build-frsky.py b/tools/build-frsky.py
index d342aedd1..ff0b5fa2a 100755
--- a/tools/build-frsky.py
+++ b/tools/build-frsky.py
@@ -107,7 +107,7 @@ def build(board, translation, srcdir):
     index = 0
     while 1:
         suffix = "" if index == 0 else "_%d" % index
-        filename = "output/firmware_%s_%s%s.bin" % (board.lower(), timestamp(), suffix)
+        filename = "output/firmware_%s_%s_%s%s.bin" % (board.lower(), translation.lower(), timestamp(), suffix)
         if not os.path.exists(filename):
             shutil.copy("%s/firmware.bin" % path, filename)
             break