diff --git a/src/buildHTML.js b/src/buildHTML.js
index 5fc35e4d..ca5f410a 100644
--- a/src/buildHTML.js
+++ b/src/buildHTML.js
@@ -641,20 +641,17 @@ function buildHTMLUnbreakable(children, options) {
     // Compute height and depth of this chunk.
     const body = makeSpan(["base"], children, options);
 
-    // Add struts, which ensure that the top of the HTML element falls at
+    // Add strut, which ensures that the top of the HTML element falls at
     // the height of the expression, and the bottom of the HTML element
     // falls at the depth of the expression.
-    const topStrut = makeSpan(["strut"]);
-    const bottomStrut = makeSpan(["strut", "bottom"]);
-
-    topStrut.style.height = body.height + "em";
-    bottomStrut.style.height = (body.height + body.depth) + "em";
-    // We'd like to use `vertical-align: top` but in IE 9 this lowers the
-    // baseline of the box to the bottom of this strut (instead staying in the
-    // normal place) so we use an absolute value for vertical-align instead
-    bottomStrut.style.verticalAlign = -body.depth + "em";
-
-    body.children.unshift(topStrut, bottomStrut);
+    // We used to have separate top and bottom struts, where the bottom strut
+    // would like to use `vertical-align: top`, but in IE 9 this lowers the
+    // baseline of the box to the bottom of this strut (instead of staying in
+    // the normal place) so we use an absolute value for vertical-align instead.
+    const strut = makeSpan(["strut"]);
+    strut.style.height = (body.height + body.depth) + "em";
+    strut.style.verticalAlign = -body.depth + "em";
+    body.children.unshift(strut);
 
     return body;
 }
diff --git a/test/screenshotter/images/BinomTest-chrome.png b/test/screenshotter/images/BinomTest-chrome.png
index 83651956..00caf630 100644
Binary files a/test/screenshotter/images/BinomTest-chrome.png and b/test/screenshotter/images/BinomTest-chrome.png differ
diff --git a/test/screenshotter/images/LeftRight-chrome.png b/test/screenshotter/images/LeftRight-chrome.png
index 795c0131..985b3005 100644
Binary files a/test/screenshotter/images/LeftRight-chrome.png and b/test/screenshotter/images/LeftRight-chrome.png differ
diff --git a/test/screenshotter/images/LeftRightMiddle-chrome.png b/test/screenshotter/images/LeftRightMiddle-chrome.png
index 439a75df..21e8bc5d 100644
Binary files a/test/screenshotter/images/LeftRightMiddle-chrome.png and b/test/screenshotter/images/LeftRightMiddle-chrome.png differ