diff --git a/docs/whitedoc/proof_of_stake.rst b/docs/whitedoc/proof_of_stake.rst
index 4b09672e1..beed7d134 100644
--- a/docs/whitedoc/proof_of_stake.rst
+++ b/docs/whitedoc/proof_of_stake.rst
@@ -72,7 +72,7 @@ Delegation
 ----------
 
 Tezos.alpha uses a delegated proof-of-stake model. The acronym DPOS has come to
-designate a specific type of algorithm used, for instance in in Bitshares.
+designate a specific type of algorithm used, for instance in Bitshares.
 This is *not* the model used in Tezos.alpha, though there is a concept
 of delegation.