diff --git a/cas/cas-server/src/main/java/fr/gouv/vitamui/cas/authentication/UserPrincipalResolver.java b/cas/cas-server/src/main/java/fr/gouv/vitamui/cas/authentication/UserPrincipalResolver.java
index 82abf84cc31b8e75c0034e039e8966960095e948..fb4a093a71832a7fd1db0d76608eadcf2e8ddae3 100644
--- a/cas/cas-server/src/main/java/fr/gouv/vitamui/cas/authentication/UserPrincipalResolver.java
+++ b/cas/cas-server/src/main/java/fr/gouv/vitamui/cas/authentication/UserPrincipalResolver.java
@@ -66,6 +66,7 @@ import static fr.gouv.vitamui.commons.api.CommonConstants.SUPER_USER_ATTRIBUTE;
 import static fr.gouv.vitamui.commons.api.CommonConstants.SUPER_USER_IDENTIFIER_ATTRIBUTE;
 import static fr.gouv.vitamui.commons.api.CommonConstants.SURROGATION_PARAMETER;
 import static fr.gouv.vitamui.commons.api.CommonConstants.TENANTS_BY_APP_ATTRIBUTE;
+import static fr.gouv.vitamui.commons.api.CommonConstants.SITE_CODE;
 import static fr.gouv.vitamui.commons.api.CommonConstants.TYPE_ATTRIBUTE;
 import static fr.gouv.vitamui.commons.api.CommonConstants.USER_ID_ATTRIBUTE;
 
@@ -217,7 +218,7 @@ public class UserPrincipalResolver implements PrincipalResolver {
             attributes.put(AUTHTOKEN_ATTRIBUTE, Collections.singletonList(authUser.getAuthToken()));
             attributes.put(PROOF_TENANT_ID_ATTRIBUTE, Collections.singletonList(authUser.getProofTenantIdentifier()));
             attributes.put(TENANTS_BY_APP_ATTRIBUTE, Collections.singletonList(new CasJsonWrapper(authUser.getTenantsByApp())));
-            attributes.put("siteCode", Collections.singletonList(user.getSiteCode()));
+            attributes.put(SITE_CODE, Collections.singletonList(user.getSiteCode()));
             final Set<String> roles = new HashSet<>();
             final List<ProfileDto> profiles = authUser.getProfileGroup().getProfiles();
             profiles.forEach(profile -> profile.getRoles().forEach(role -> roles.add(role.getName())));
diff --git a/commons/commons-api/src/main/java/fr/gouv/vitamui/commons/api/CommonConstants.java b/commons/commons-api/src/main/java/fr/gouv/vitamui/commons/api/CommonConstants.java
index 3807b6fa7ee7114355ea227652ed7ec4af1fe2d0..234e04a7b89cd8c8029771db4d2ac60032f8ec85 100644
--- a/commons/commons-api/src/main/java/fr/gouv/vitamui/commons/api/CommonConstants.java
+++ b/commons/commons-api/src/main/java/fr/gouv/vitamui/commons/api/CommonConstants.java
@@ -165,6 +165,8 @@ public class CommonConstants {
 
     public static final String TENANTS_BY_APP_ATTRIBUTE = "tenantsByApp";
 
+    public static final String SITE_CODE = "siteCode";
+
     public static final String CUSTOMER_ID_ATTRIBUTE = "customerId";
 
     public static final String CUSTOMER_IDENTIFIER_ATTRIBUTE = "customerIdentifier";
diff --git a/commons/commons-security/src/main/java/fr/gouv/vitamui/commons/security/client/dto/AuthUserDto.java b/commons/commons-security/src/main/java/fr/gouv/vitamui/commons/security/client/dto/AuthUserDto.java
index aed4e4c8037e03ea7feb4f23698377626510922a..44cd65a8a651fa7bc49c80afb1db85efb9ebb7dd 100644
--- a/commons/commons-security/src/main/java/fr/gouv/vitamui/commons/security/client/dto/AuthUserDto.java
+++ b/commons/commons-security/src/main/java/fr/gouv/vitamui/commons/security/client/dto/AuthUserDto.java
@@ -246,7 +246,7 @@ public class AuthUserDto extends UserDto implements UserDetails {
                         setTenantsByApp((List<TenantInformationDto>) parseJson(value, new TypeReference<List<TenantInformationDto>>() {
                         }));
                         break;
-                    case "siteCode" :
+                    case SITE_CODE :
                         setSiteCode((String) value);
                         break;
                 }