diff --git a/NewCaps/WhatCouldGoWrong.md b/NewCaps/WhatCouldGoWrong.md
index 9f314fb..41205fa 100644
--- a/NewCaps/WhatCouldGoWrong.md
+++ b/NewCaps/WhatCouldGoWrong.md
@@ -27,7 +27,7 @@ where *k* = bitlength(*K1*), *n* = bitlength(*R*), *t* = bitlength(*T*), *u* = b
 
 4. See the probability table at <http://en.wikipedia.org/wiki/Birthday_Paradox> , for hash length *s*+*t*.
 
-5. Brute force costs assume a single-target attack that is expected to succeed with high probability. Costs will be lower for attacking multiple targets or for a lower success probability. (Should we give give explicit formulae for this?)
+5. Brute force costs assume a single-target attack that is expected to succeed with high probability. Costs will be lower for attacking multiple targets or for a lower success probability. (Should we give explicit formulae for this?)
 
 
 <http://allmydata.org/pipermail/tahoe-dev/2009-October/002959.html>
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