diff --git a/src/epub/text/chapter-9.xhtml b/src/epub/text/chapter-9.xhtml
index 188216a..3b54800 100644
--- a/src/epub/text/chapter-9.xhtml
+++ b/src/epub/text/chapter-9.xhtml
@@ -135,7 +135,7 @@
 						</td>
 					</tr>
 					<tr>
-						<td>Dumbell exercise and wall-scaling</td>
+						<td>Dumbbell exercise and wall-scaling</td>
 						<td><time datetime="1906-09-12T06:15">6:15</time>⁠–⁠<time datetime="1906-09-12T06:30">6:30</time></td>
 						<td>”</td>
 					</tr>