diff --git a/management/univention-directory-manager-modules/modules/univention/admin/modules.py b/management/univention-directory-manager-modules/modules/univention/admin/modules.py
index 0465e6c..26fe73d 100644
--- a/management/univention-directory-manager-modules/modules/univention/admin/modules.py
+++ b/management/univention-directory-manager-modules/modules/univention/admin/modules.py
@@ -331,10 +331,6 @@ def name( self ):
 		return self.get( 'name', '' )
 
 	@property
-	def fillWidth( self ):
-		return self.get( 'fillWidth', False )
-
-	@property
 	def overwrite( self ):
 		return self.get( 'overwrite', None )
 
@@ -452,7 +448,7 @@ def update_extended_attributes(lo, module, position):
 		longdesc = attrs.get('univentionUDMPropertyTranslationLongDescription;entry-%s' % lang, attrs.get('univentionUDMPropertyLongDescription', ['']))[0]
 
 		# create property
-		# FIXME: must add attribute to honor fullWidth (should be defined by the syntax)
+		fullWidth = (attrs.get('univentionUDMPropertyLayoutFullWidth',[ '0' ])[0].upper() in [ '1', 'TRUE' ])
 		module.property_descriptions[pname] = univention.admin.property(
 			short_description = shortdesc,
 			long_description = longdesc,
@@ -464,7 +460,8 @@ def update_extended_attributes(lo, module, position):
 			dontsearch = doNotSearch,
 			identifies = 0,
 			default = propertyDefault,
-			editable = editable
+			editable = editable,
+			size = 'Two' if fullWidth else None,
 		)
 
 		# add LDAP mapping
@@ -483,7 +480,6 @@ def update_extended_attributes(lo, module, position):
 			overwriteProp = attrs.get( 'univentionUDMPropertyLayoutOverwritePosition', [ '' ] )[ 0 ]
 			if overwriteProp == '0':
 				overwriteProp = None
-			fullWidth = ( attrs.get('univentionUDMPropertyLayoutFullWidth',[ '0' ])[0].upper() in [ '1', 'TRUE' ] )
 			deleteObjectClass = ( attrs.get('univentionUDMPropertyDeleteObjectClass', ['0'])[0].upper() in [ '1', 'TRUE' ] )
 			tabAdvanced = ( attrs.get('univentionUDMPropertyLayoutTabAdvanced',[ '0' ])[0].upper() in [ '1', 'TRUE' ] )
 
@@ -528,7 +524,7 @@ def update_extended_attributes(lo, module, position):
 						except:
 							ud.debug(ud.ADMIN, ud.WARN, 'modules update_extended_attributes: custom field for tab %s: failed to set tabPosition' % tabname)
 
-				properties4tabs[ tabname ].append( EA_Layout( name = pname, tabName = tabname, position = tabPosition, advanced = tabAdvanced, overwrite = overwriteProp, fullWidth = fullWidth, groupName = groupname, groupPosition = groupPosition ) )
+				properties4tabs[ tabname ].append( EA_Layout( name = pname, tabName = tabname, position = tabPosition, advanced = tabAdvanced, overwrite = overwriteProp, groupName = groupname, groupPosition = groupPosition ) )
 
 			module.extended_udm_attributes.extend( [ univention.admin.extended_attribute( pname, attrs.get('univentionUDMPropertyObjectClass', [])[0],
 																				  attrs['univentionUDMPropertyLdapMapping'][0], deleteObjectClass,