diff --git a/schema/lib/elements/ipxe.xsd b/schema/lib/elements/ipxe.xsd
index 6a00bb7..9555492 100644
--- a/schema/lib/elements/ipxe.xsd
+++ b/schema/lib/elements/ipxe.xsd
@@ -23,7 +23,7 @@
         </xs:complexType>
       </xs:element>
     </xs:choice>
-    <xs:attribute name="file" type="t_unix_anyfile" use="required"/>
+    <xs:attribute name="file" type="t_unix_relfilepath" use="required"/>
   </xs:complexType>
 
   <xs:complexType name="e_ipxe_optswitch">