diff --git a/phpBB/styles/prosilver/template/bbcode.html b/phpBB/styles/prosilver/template/bbcode.html
index f4ec94dbfe..940c0ace29 100644
--- a/phpBB/styles/prosilver/template/bbcode.html
+++ b/phpBB/styles/prosilver/template/bbcode.html
@@ -64,7 +64,7 @@
 
 <!-- BEGIN color --><span style="color: {COLOR}">{TEXT}</span><!-- END color -->
 
-<!-- BEGIN size --><span><xsl:attribute name="style"><xsl:text>font-size: </xsl:text><xsl:value-of select="substring(@size, 1, 4)"/><xsl:text>%; line-height: normal</xsl:text></xsl:attribute><xsl:apply-templates/></span><!-- END size -->
+<!-- BEGIN size --><span style="font-size: {SIZE}%; line-height: 116%;">{TEXT}</span><!-- END size -->
 
 <!-- BEGIN img --><img src="{URL}" class="postimage" alt="{L_IMAGE}" /><!-- END img -->