diff --git a/layout/reftests/bugs/619511-1-ref.html b/layout/reftests/bugs/619511-1-ref.html
index 78068ca3cfc..9e9476486c8 100644
--- a/layout/reftests/bugs/619511-1-ref.html
+++ b/layout/reftests/bugs/619511-1-ref.html
@@ -8,6 +8,7 @@
 body {
   font-family: dl1, serif;
   font-size: 36px;
+  line-height: 2em;
   letter-spacing: 3px;
 }
 </style>
diff --git a/layout/reftests/bugs/619511-1.html b/layout/reftests/bugs/619511-1.html
index 78bafb5587d..6c222921409 100644
--- a/layout/reftests/bugs/619511-1.html
+++ b/layout/reftests/bugs/619511-1.html
@@ -8,6 +8,7 @@
 body {
   font-family: dl1, serif;
   font-size: 36px;
+  line-height: 2em;
   letter-spacing: 3px;
 }
 </style>
diff --git a/layout/reftests/text/justification-1-ref.html b/layout/reftests/text/justification-1-ref.html
index f2e8afacd91..34841a4b8e0 100644
--- a/layout/reftests/text/justification-1-ref.html
+++ b/layout/reftests/text/justification-1-ref.html
@@ -1,12 +1,11 @@
 <!DOCTYPE HTML>
 <html>
-<body style="width:6em; text-align:justify; border:1px solid black; overflow:hidden;">
-
-<p>I am the very model of a modern major-general.
-<p style="width:100em;">I am the very model of a modern major-general.
-<p style="width:100em;">I &nbsp;am the<br>very model of a modern major-general.
-<p style="text-align:left;">I&nbsp;&nbsp;&#x200b;am&nbsp;&#x200b;the<br>very&nbsp;&#x200b;model&nbsp;&#x200b;of&nbsp;&#x200b;a&nbsp;&#x200b;modern&nbsp;&#x200b;major-general.
-<p>I am the<br>very model of a modern major-general.
+<body style="line-height:1.5em; width:6em; text-align:justify; border:1px solid black; overflow:hidden;">
 
+<p>I am the very model of a modern major-general.</p>
+<p style="width:100em;">I am the very model of a modern major-general.</p>
+<p style="width:100em;">I &nbsp;am the<br>very model of a modern major-general.</p>
+<p style="text-align:left;">I&nbsp;&nbsp;&#x200b;am&nbsp;&#x200b;the<br>very&nbsp;&#x200b;model&nbsp;&#x200b;of&nbsp;&#x200b;a&nbsp;&#x200b;modern&nbsp;&#x200b;major-general.</p>
+<p>I am the<br>very model of a modern major-general.</p>
 </body>
 </html>
diff --git a/layout/reftests/text/justification-1.html b/layout/reftests/text/justification-1.html
index 19606fff032..06e2c6d0099 100644
--- a/layout/reftests/text/justification-1.html
+++ b/layout/reftests/text/justification-1.html
@@ -1,17 +1,17 @@
 <!DOCTYPE HTML>
 <html>
-<body style="width:6em; text-align:justify; border:1px solid black;">
+<body style="line-height:1.5em; width:6em; text-align:justify; border:1px solid black;">
 
 <!-- Test which white-space values are allowed to take justification -->
 
 <p style="white-space:normal;">I  am the
-very model of a modern major-general.
+very model of a modern major-general.</p>
 <p style="white-space:nowrap;">I  am the
-very model of a modern major-general.
+very model of a modern major-general.</p>
 <p style="white-space:pre;">I  am the
-very model of a modern major-general.
+very model of a modern major-general.</p>
 <p style="white-space:pre-wrap;">I  am the
-very model of a modern major-general.
+very model of a modern major-general.</p>
 <p style="white-space:pre-line;">I  am the
-very model of a modern major-general.
-</body></html>
\ No newline at end of file
+very model of a modern major-general.</p>
+</body></html>
