diff --git a/management/univention-directory-manager-modules/modules/univention/admincli/admin.py b/management/univention-directory-manager-modules/modules/univention/admincli/admin.py
index d309378..1eb7836 100755
--- a/management/univention-directory-manager-modules/modules/univention/admincli/admin.py
+++ b/management/univention-directory-manager-modules/modules/univention/admincli/admin.py
@@ -297,7 +297,9 @@ def object_input(module, object, input, append=None, remove=None):
 							out.append('E: Invalid Syntax: %s' % str(errmsg))
 	if remove:
 		for key, value in remove.items():
-			if univention.admin.syntax.is_syntax( module.property_descriptions[key].syntax, univention.admin.syntax.complex ):
+			if not module.property_descriptions[key].multivalue:
+				out.append("WARNING: --remove should not be used for non multivalue fields. use --set %s='' instead." % (key,))
+			elif univention.admin.syntax.is_syntax( module.property_descriptions[key].syntax, univention.admin.syntax.complex ):
 				if value:
 					for i in range(0,len(value)):
 						test_val=value[i].split('"')