diff --git a/v2_2_0/DCFG-authenticationProfile-v2_2_0.xsd b/v2_2_0/DCFG-authenticationProfile-v2_2_0.xsd
index b5ea2b965d6ecc0a571a0e2c3e1c3a3d93052ca3..9a662b131294d69fa1fa4514dc95b4fbfa05cefa 100644
--- a/v2_2_0/DCFG-authenticationProfile-v2_2_0.xsd
+++ b/v2_2_0/DCFG-authenticationProfile-v2_2_0.xsd
@@ -45,7 +45,7 @@ oneM2M EXPRESSLY ADVISES ANY AND ALL USE OF OR RELIANCE UPON THIS INFORMATION PR
 						<xs:element name="SUID" type="m2m:suid"/>
 						<xs:element name="TLSCiphersuites" type="dcfg:listOfTLSCiphersuite" minOccurs="0"/>
 						<xs:element name="symmKeyID" type="sec:credentialID" minOccurs="0"/>
-						<xs:element name="symmKeyValue" type="xs:base64Binary" minOccurs="0"/>
+						<xs:element name="symmKeyValue" type="xs:hexBinary" minOccurs="0"/>
 						<xs:element name="MAFKeyRegLabels" type="m2m:labels" minOccurs="0"/>
 						<xs:element name="MAFKeyRegDuration" type="xs:duration" minOccurs="0"/>
 						<xs:element name="mycertFingerprint" minOccurs="0">