diff --git a/source/scripts/board_interface.py b/source/scripts/board_interface.py
index 3fc6c0e..a260ea8 100755
--- a/source/scripts/board_interface.py
+++ b/source/scripts/board_interface.py
@@ -16,7 +16,8 @@ def parse_board_file(boardfile):
         if match("^.*struct driver.*$", line):
             line = sub("^.*struct driver", "", line).strip()
             line = sub(" .*$","",line).strip()
-            ret.append(line)
+            if not line in ret:
+                ret.append(line)
     return ret
 
 def create_board_interface(device_list, outfile):