diff --git a/ch07_authorization-authentication.adoc b/ch07_authorization-authentication.adoc
index 3e74bf17..5686fe11 100644
--- a/ch07_authorization-authentication.adoc
+++ b/ch07_authorization-authentication.adoc
@@ -399,7 +399,7 @@ is +t+, the quorum (how many signatures are needed). Here t = 2. At this
 point, +OP_CHECKMULTISIG+ should pop the final +t+ items, which are the
 signatures, and see if they are valid. However, unfortunately, an oddity in
 the implementation causes +OP_CHECKMULTISIG+ to pop one more item (t+1
-total) than it should. The extra item is called the _dummy stack
+total) than it should. The extra item is called((("dummy stack element"))) the _dummy stack
 element_ and it is disregarded when checking the
 signatures so it has no direct effect on +OP_CHECKMULTISIG+ itself.
 However, the dummy element must be present because, if it isn't present,