diff --git a/xsl/portal2items.xsl b/xsl/portal2items.xsl
index eefe9d3cb..7be8c8b18 100644
--- a/xsl/portal2items.xsl
+++ b/xsl/portal2items.xsl
@@ -56,9 +56,19 @@
   <footer><xsl:value-of select="." disable-output-escaping="yes"/></footer>
 </xsl:template>
 <xsl:template match="atom:link[@rel='enclosure' and @href]" mode="gallery">
+  <xsl:variable name="href" select="substring-after(@href, '/mgoblin_media/')"/>
+
   <content-image>
     <xsl:text>/mgoblin_media/</xsl:text>
-    <xsl:value-of select="replace(substring-after(@href, '/mgoblin_media/'), '.jpg', '.medium.jpg')"/>
+
+    <xsl:choose>
+      <xsl:when test="contains($href, '.jpg')">
+        <xsl:value-of select="concat(substring-before($href, '.jpg'), '.medium.jpg')"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$href"/>
+      </xsl:otherwise>
+    </xsl:choose>
   </content-image>
 </xsl:template>
 <xsl:template match="atom:link[@rel='alternate' and @href]" mode="gallery">