diff --git a/ch12.asciidoc b/ch12.asciidoc
index a6ca5c39..2ef50f9c 100644
--- a/ch12.asciidoc
+++ b/ch12.asciidoc
@@ -73,7 +73,7 @@ Payment Channels:: ((("payment (state) channels", "building blocks (primitives)
 
 More recent implementations of colored coins use the +OP_RETURN+ script opcode to store metadata in a transaction, in conjunction with external data stores that associate the metadata to specific assets.
 
-((("Open Assets")))((("Colored Coins by Colu")))The two most prominent implementations of colored coins today are http://www.openassets.org/[_Open Assets_] and http://coloredcoins.org[_Colored Coins by Colu_]. These two systems use different approaches to colored coins and are not compatible. Colored coins created in one system cannot be seen or used in the other system.
+((("Open Assets")))The two most prominent implementations of colored coins today are http://www.openassets.org/[_Open Assets_] and http://coloredcoins.org[_Colored Coins by Colu_]. These two systems use different approaches to colored coins and are not compatible. Colored coins created in one system cannot be seen or used in the other system.
 
 ==== Using Colored Coins