diff --git a/plugins/Math/local/convertcore.py b/plugins/Math/local/convertcore.py
index 4af69c314..3357123b5 100644
--- a/plugins/Math/local/convertcore.py
+++ b/plugins/Math/local/convertcore.py
@@ -10,11 +10,8 @@
 #
 #****************************************************************************
 
-import re, copy, sys, os.path
-
-import supybot.conf as conf
-import supybot.utils.minisix as minisix
-import supybot.registry as registry
+import re
+import copy
 
 unitData = \
 """