diff --git a/bip-???-cat.mediawiki b/bip-???-cat.mediawiki
index 68c24c96..334cc202 100644
--- a/bip-???-cat.mediawiki
+++ b/bip-???-cat.mediawiki
@@ -39,7 +39,7 @@ For example, a script that pushed a 1-byte value on the stack and then repeated
 
 ==Specification==
 
-OP_CAT pops two elements off the stack, concatenates them together in stack order and pushes the resulting element onto the stack. Given the stack _[x1, x2]_, where _x2_ is at the top of the stack, OP_CAT will push _x1 || x2_ onto the stack. By _||_ we denote concatenation.
+OP_CAT pops two elements off the stack, concatenates them together in stack order and pushes the resulting element onto the stack. Given the stack ''<nowiki>[x1, x2]</nowiki>'', where ''x2'' is at the top of the stack, OP_CAT will push ''x1 || x2'' onto the stack. By ''||'' we denote concatenation.
 
 ===Implementation===
 <pre>