diff --git a/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2 b/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2
index a3e5459077f..654d4152b95 100644
--- a/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2
+++ b/ansible/roles/schulcloud-server-init/templates/configmap_file_init.yml.j2
@@ -390,8 +390,8 @@ data:
                       }'
 
             # Add Bettermarks' tools configuration as an external tool
-            # (stored in the 'external_tools' collection) that uses OAuth.
-            mongosh $DATABASE__URL --eval 'db.external_tools.replaceOne(
+            # (stored in the 'external-tools' collection) that uses OAuth.
+            mongosh $DATABASE__URL --eval 'db.external-tools.replaceOne(
                 {
                   "name": "bettermarks",
                   "config_type": "oauth2"
@@ -486,9 +486,9 @@ data:
          echo "POSTed nextcloud to hydra."
 
          # Add Nextcloud' tools configuration as an external tool
-         # (stored in the 'external_tools' collection) that uses OAuth.
-         echo "Inserting nextcloud to external_tools..."
-         mongosh $DATABASE__URL --eval 'db.external_tools.update(
+         # (stored in the 'external-tools' collection) that uses OAuth.
+         echo "Inserting nextcloud to external-tools..."
+         mongosh $DATABASE__URL --eval 'db.external-tools.update(
              {
                "name": "nextcloud",
                "config_type": "oauth2"
@@ -512,7 +512,7 @@ data:
                "upsert": true
              }
          );'
-         echo "Inserted nextcloud to external_tools."
+         echo "Inserted nextcloud to external-tools."
 
          echo "Nextcloud config data init performed successfully."
     fi
diff --git a/apps/server/src/modules/authorization/domain/type/allowed-authorization-object-type.enum.ts b/apps/server/src/modules/authorization/domain/type/allowed-authorization-object-type.enum.ts
index f36ca235af1..01f24b21985 100644
--- a/apps/server/src/modules/authorization/domain/type/allowed-authorization-object-type.enum.ts
+++ b/apps/server/src/modules/authorization/domain/type/allowed-authorization-object-type.enum.ts
@@ -7,7 +7,7 @@ export enum AuthorizableReferenceType {
 	'Lesson' = 'lessons',
 	'Team' = 'teams',
 	'Submission' = 'submissions',
-	'SchoolExternalToolEntity' = 'school_external_tools',
+	'SchoolExternalToolEntity' = 'school-external-tools',
 	'BoardNode' = 'boardnodes',
-	'ContextExternalToolEntity' = 'context_external_tools',
+	'ContextExternalToolEntity' = 'context-external-tools',
 }
diff --git a/src/services/school/model.js b/src/services/school/model.js
index 0ec931e4191..787f7b55348 100644
--- a/src/services/school/model.js
+++ b/src/services/school/model.js
@@ -177,7 +177,7 @@ const gradeLevelSchema = new Schema({
 });
 
 const schoolModel = mongoose.model('school', schoolSchema);
-const userLoginMigrationModel = mongoose.model('userLoginMigration', userLoginMigrationSchema, 'user_login_migrations');
+const userLoginMigrationModel = mongoose.model('userLoginMigration', userLoginMigrationSchema, 'user-login-migrations');
 const schoolGroupModel = mongoose.model('schoolGroup', schoolGroupSchema);
 const yearModel = mongoose.model('year', yearSchema);
 const gradeLevelModel = mongoose.model('gradeLevel', gradeLevelSchema);