diff --git a/html_calendar.xsl b/html_calendar.xsl
index 67a8d74..03c0494 100755
--- a/html_calendar.xsl
+++ b/html_calendar.xsl
@@ -470,6 +470,13 @@
 	</xsl:template>
 	
 	<!--
+		Output an apostrophe.
+	-->
+	<xsl:template match="apostrophe">
+		<xsl:text disable-output-escaping="yes">&amp;#8217;</xsl:text>
+	</xsl:template>
+
+	<!--
 		Miscellaneous HTML elements to be mapped straight through.
 	-->
 	<xsl:template match="strong">