diff --git a/schema/edxml.rng b/schema/edxml.rng
index f5389ff4d540b664a30dd64a56ca0669369cab3f..0793089794695cea973f53d4ca532bd7088ac549 100644
--- a/schema/edxml.rng
+++ b/schema/edxml.rng
@@ -725,56 +725,7 @@
                 <text/>
             </interleave>
         </element>
-    </define>
-
-    <define name="elem.relations">
-        <element name="relations">
-            <element name="head">
-                <text/>
-            </element>
-            <zeroOrMore>
-                <ref name="elem.relation"/>
-            </zeroOrMore>
-        </element>
-    </define>
-
-    <define name="elem.relation">
-        <element name="relation">
-            <attribute name="type"/>
-            <attribute name="source">
-                <data type="anyURI"/>
-                <sch:pattern>
-                    <sch:rule context="edxml:relation/@source">
-                        <sch:let name="id" value="substring-after(., '#')"/>
-                        <sch:assert test="//*[@xml:id = $id]" role="error">(ID '<sch:value-of
-                                select="$id"/>' gibt's nicht!): Die ID in @<sch:name/> gibt es in
-                            diesem Dokument nicht!</sch:assert>
-                    </sch:rule>
-                </sch:pattern>
-            </attribute>
-            <attribute name="target">
-                <data type="anyURI"/>
-                <sch:pattern>
-                    <sch:rule context="edxml:relation/@target">
-                        <sch:let name="id" value="substring-after(., '#')"/>
-                        <sch:assert test="//*[@xml:id = $id]" role="error">(ID '<sch:value-of
-                                select="$id"/>' gibt's nicht!): Die ID in @<sch:name/> gibt es in
-                            diesem Dokument nicht!</sch:assert>
-                    </sch:rule>
-                </sch:pattern>
-            </attribute>
-            <text/>
-        </element>
-    </define>
-
-
-
-    <define name="elem.ref">
-        <element name="ref">
-            <attribute name="target"/>
-            <text/>
-        </element>
-    </define>
+    </define>  
 
     <define name="elem.rendition">
         <element name="rendition">