diff --git a/src/functions/phantom.js b/src/functions/phantom.js
index e098f66a..9d54a0e6 100644
--- a/src/functions/phantom.js
+++ b/src/functions/phantom.js
@@ -76,8 +76,10 @@ defineFunction({
     },
     mathmlBuilder: (group, options) => {
         const inner = mml.buildExpression(ordargument(group.body), options);
-        const node = new mathMLTree.MathNode("mphantom", inner);
+        const phantom = new mathMLTree.MathNode("mphantom", inner);
+        const node = new mathMLTree.MathNode("mpadded", [phantom]);
         node.setAttribute("height", "0px");
+        node.setAttribute("depth", "0px");
         return node;
     },
 });
@@ -107,7 +109,8 @@ defineFunction({
     },
     mathmlBuilder: (group, options) => {
         const inner = mml.buildExpression(ordargument(group.body), options);
-        const node = new mathMLTree.MathNode("mphantom", inner);
+        const phantom = new mathMLTree.MathNode("mphantom", inner);
+        const node = new mathMLTree.MathNode("mpadded", [phantom]);
         node.setAttribute("width", "0px");
         return node;
     },