diff --git a/xsl/calendar-summary.xsl b/xsl/calendar-summary.xsl
index 3535b5c15..231540dc8 100644
--- a/xsl/calendar-summary.xsl
+++ b/xsl/calendar-summary.xsl
@@ -29,36 +29,40 @@
   <xsl:template match="event">
     <xsl:param name="link"/>
 
-    <event>
-      <title>
-        <xsl:choose>
-          <xsl:when test="@title"><xsl:value-of select="@title"/></xsl:when>
-          <xsl:when test="../@title"><xsl:value-of select="../@title"/></xsl:when>
-          <xsl:otherwise>
-            <xsl:message terminate="yes">Event with no title!</xsl:message>
-          </xsl:otherwise>
-        </xsl:choose>
-      </title>
-      <start><xsl:value-of select="start"/></start>
-      <end>
-        <xsl:choose>
-          <xsl:when test="end">
-            <xsl:value-of select="end"/>
-          </xsl:when>
-          <xsl:otherwise>
-            <xsl:value-of select="start"/>
-          </xsl:otherwise>
-        </xsl:choose>
-      </end>
-      <location><xsl:value-of select="location"/></location>
-      <link>
-        <xsl:choose>
-          <xsl:when test="link"><xsl:value-of select="link"/></xsl:when>
-          <xsl:otherwise><xsl:value-of select="$link"/></xsl:otherwise>
-        </xsl:choose>
-      </link>
-      <!-- TODO: Link -->
-    </event>
+    <!-- Events must have started at least one year ago -->
+    <xsl:variable name="minstart" select="date:add(date:date-time(), '-P366D')"/>
+    <xsl:if test="starts-with(date:difference(start, $minstart), '-')">
+      <event>
+	<title>
+	  <xsl:choose>
+	    <xsl:when test="@title"><xsl:value-of select="@title"/></xsl:when>
+	    <xsl:when test="../@title"><xsl:value-of select="../@title"/></xsl:when>
+	    <xsl:otherwise>
+	      <xsl:message terminate="yes">Event with no title!</xsl:message>
+	    </xsl:otherwise>
+	  </xsl:choose>
+	</title>
+	<start><xsl:value-of select="start"/></start>
+	<end>
+	  <xsl:choose>
+	    <xsl:when test="end">
+	      <xsl:value-of select="end"/>
+	    </xsl:when>
+	    <xsl:otherwise>
+	      <xsl:value-of select="start"/>
+	    </xsl:otherwise>
+	  </xsl:choose>
+	</end>
+	<location><xsl:value-of select="location"/></location>
+	<link>
+	  <xsl:choose>
+	    <xsl:when test="link"><xsl:value-of select="link"/></xsl:when>
+	    <xsl:otherwise><xsl:value-of select="$link"/></xsl:otherwise>
+	  </xsl:choose>
+	</link>
+	<!-- TODO: Link -->
+      </event>
+    </xsl:if>
   </xsl:template>
 
 </xsl:stylesheet>