diff --git a/src/epub/toc.xhtml b/src/epub/toc.xhtml
index e942fb2..d5c9ac1 100644
--- a/src/epub/toc.xhtml
+++ b/src/epub/toc.xhtml
@@ -32,7 +32,7 @@
 							<a href="text/chapter-3.xhtml"><span epub:type="z3998:roman">III</span>: The Master’s Wanderings</a>
 						</li>
 						<li>
-							<a href="text/chapter-4.xhtml"><span epub:type="z3998:roman">IV</span>: Persecutions Endured by <abbr>Mr.</abbr> Henry</a>
+							<a href="text/chapter-4.xhtml"><span epub:type="z3998:roman">IV</span>: Persecutions Endured by <abbr epub:type="z3998:name-title">Mr.</abbr> Henry</a>
 						</li>
 						<li>
 							<a href="text/chapter-5.xhtml"><span epub:type="z3998:roman">V</span>: Account of All That Passed on the Night of February 27th, 1757</a>
@@ -47,7 +47,7 @@
 							<a href="text/chapter-8.xhtml"><span epub:type="z3998:roman">VIII</span>: The Enemy in the House</a>
 						</li>
 						<li>
-							<a href="text/chapter-9.xhtml"><span epub:type="z3998:roman">IX</span>: <abbr>Mr.</abbr> Mackellar’s Journey with the Master</a>
+							<a href="text/chapter-9.xhtml"><span epub:type="z3998:roman">IX</span>: <abbr epub:type="z3998:name-title">Mr.</abbr> Mackellar’s Journey with the Master</a>
 						</li>
 						<li>
 							<a href="text/chapter-10.xhtml"><span epub:type="z3998:roman">X</span>: Passages at New York</a>