diff --git a/glossary.tex b/glossary.tex
index 0bde4b9aac9515ec6894fd37068a98e16d1a1280..499ae0f72dfa48ae4d84c496ec24d9a04f82b155 100644
--- a/glossary.tex
+++ b/glossary.tex
@@ -583,6 +583,7 @@ Set the darker die to `\dicef{6}' and roll the other.  If this roll fails, it fa
   text={spell},
   prefix={a\space},
   parent={casting},
+  type={mech},
   description={have a mind of their own.
   Once cast, they endure until they burn through themselves, or something destroys them.
   To stop a Fire spell, someone must put the fire out, and if an angry \glsentrytext{witch} makes antlers grow on someone's head, the only way to `dispel' them is with a boning knife.