diff --git a/edlclient/Tools/sierrakeygen.py b/edlclient/Tools/sierrakeygen.py
index 0147168..98e312a 100755
--- a/edlclient/Tools/sierrakeygen.py
+++ b/edlclient/Tools/sierrakeygen.py
@@ -147,7 +147,7 @@ infotable = {
     "MDM9x15A": ["AC779S"],
     "MDM9x30": ["EM7455", "MC7455", "EM7430", "MC7430"],
     "MDM9x30_V1": ["Netgear AC790/MDM9230"],
-    "MDM9x40": ["MR1100", "AC815s", "AC785s", "AC797S", "MR1100"],
+    "MDM9x40": ["MR1100", "AC815s", "AC785s", "AC797S"],
     "MDM9x50": ["EM7565", "EM7565-9", "EM7511", "EM7411"],
     "SDX55": ["MR5100", "MR5200", "ac797-100eus", "MR6400"],
     "SDX65": ["MR6400", "MR6500", "MR6110", "MR6150", "MR6450", "MR6550"]