diff --git a/src/Mod/Material/importFCMat.py b/src/Mod/Material/importFCMat.py
index 0ee911c40e..e4efc15e63 100644
--- a/src/Mod/Material/importFCMat.py
+++ b/src/Mod/Material/importFCMat.py
@@ -114,7 +114,6 @@ def read(filename):
         f = pythonopen(filename)
     d = {}
     d["CardName"] = card_name_file  # CardName is the MatCard file name
-    ln = 0
     for ln, line in enumerate(f):
         ln += 1  # enumerate starts with 0, but we would like to have the real line number
         if line.startswith('#'):