diff --git a/CHANGELOG.md b/CHANGELOG.md
index f320d38..c02bb74 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - [CLI][#93](https://projekte.kosit.org/kosit/validator/-/issues/93) Remove usage information, when validation failed
 - [CLI][#95](https://projekte.kosit.org/kosit/validator/-/issues/95) NPE when using empty repository definition (-r "")
+- (CORE) [#101](https://github.com/itplr-kosit/validator/issues/101) Role is null in FailedAssert
 
 ### Added
 
diff --git a/src/main/model/xsd/svrl-kosit.xsd b/src/main/model/xsd/svrl-kosit.xsd
index 2206bab..615fa20 100644
--- a/src/main/model/xsd/svrl-kosit.xsd
+++ b/src/main/model/xsd/svrl-kosit.xsd
@@ -18,14 +18,6 @@
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:svrl="http://purl.oclc.org/dsdl/svrl"
            targetNamespace="http://purl.oclc.org/dsdl/svrl" version="0.1" elementFormDefault="qualified" attributeFormDefault="unqualified">
     <xs:import schemaLocation="xml.xsd" namespace="http://www.w3.org/XML/1998/namespace" />
-    <xs:simpleType name="FailedAssertRoleType">
-        <xs:restriction base="xs:token">
-            <xs:enumeration value="error" />
-            <xs:enumeration value="fatal" />
-            <xs:enumeration value="information" />
-            <xs:enumeration value="warning" />
-        </xs:restriction>
-    </xs:simpleType>
     <xs:complexType name="rich-text" mixed="true">
         <xs:sequence>
 
@@ -42,7 +34,7 @@
         <xs:attribute name="flag" type="xs:NMTOKEN" use="optional" />
         <xs:attribute name="id" type="xs:NMTOKEN" use="required" />
         <xs:attribute name="location" use="required" />
-        <xs:attribute name="role" type="svrl:FailedAssertRoleType" use="optional" />
+        <xs:attribute name="role" type="xs:string" use="optional"/>
         <xs:attribute name="test" use="required" />
     </xs:attributeGroup>
     <xs:attributeGroup name="foreign">