diff --git a/api/src/engine/engine.constants.ts b/api/src/engine/engine.constants.ts
index 52fc05aaf68944c770598001df6d1471e66e70fc..5bf24cf4775af1681c793d360b55950ee5b1b5df 100644
--- a/api/src/engine/engine.constants.ts
+++ b/api/src/engine/engine.constants.ts
@@ -1,4 +1,2 @@
 export const ENGINE_MODULE_OPTIONS = 'EngineModuleOption';
 export const ENGINE_SKIP_TOS = 'TOS_SKIP';
-export const ENGINE_ONTOLOGY_URL = 'ONTOLOGY_URL';
-export const ENGINE_CONTACT_LINK = 'CONTACT_LINK';
diff --git a/api/src/engine/engine.resolver.ts b/api/src/engine/engine.resolver.ts
index 5c1e6d080ee9c5f534c4ea938cc206311b8147f9..2e91dbb73c1f4c8c70d7b05c717d4c3951d26b03 100644
--- a/api/src/engine/engine.resolver.ts
+++ b/api/src/engine/engine.resolver.ts
@@ -8,12 +8,7 @@ import { parseToBoolean } from 'src/common/utils/shared.utils';
 import authConfig from 'src/config/auth.config';
 import { Md5 } from 'ts-md5';
 import { GQLRequest } from '../common/decorators/gql-request.decoractor';
-import {
-  ENGINE_CONTACT_LINK,
-  ENGINE_MODULE_OPTIONS,
-  ENGINE_ONTOLOGY_URL,
-  ENGINE_SKIP_TOS,
-} from './engine.constants';
+import { ENGINE_MODULE_OPTIONS, ENGINE_SKIP_TOS } from './engine.constants';
 import EngineService from './engine.service';
 import { ErrorsInterceptor } from './interceptors/errors.interceptor';
 import EngineOptions from './interfaces/engine-options.interface';
@@ -47,8 +42,6 @@ export class EngineResolver {
       skipTos: parseToBoolean(this.configSerivce.get(ENGINE_SKIP_TOS)),
       enableSSO: parseToBoolean(authConf.enableSSO),
       skipAuth: parseToBoolean(authConf.skipAuth, true),
-      ontologyUrl: this.configSerivce.get(ENGINE_ONTOLOGY_URL),
-      contactLink: this.configSerivce.get(ENGINE_CONTACT_LINK),
     };
 
     const version = Md5.hashStr(JSON.stringify(data));
diff --git a/api/src/engine/models/configuration.model.ts b/api/src/engine/models/configuration.model.ts
index e18ed9e5b5f4108be440669be83c360c8bd334ab..3f4e9a139e3e9ce0a2b63cb9bfce9832a12d9727 100644
--- a/api/src/engine/models/configuration.model.ts
+++ b/api/src/engine/models/configuration.model.ts
@@ -25,9 +25,6 @@ export class Configuration {
   })
   hasFilters?: boolean;
 
-  @Field({ nullable: true })
-  contactLink?: string;
-
   @Field()
   version: string;
 
@@ -39,7 +36,4 @@ export class Configuration {
 
   @Field({ nullable: true, defaultValue: true })
   enableSSO?: boolean;
-
-  @Field({ nullable: true })
-  ontologyUrl?: string;
 }
diff --git a/api/src/schema.gql b/api/src/schema.gql
index 3a76d04557b4cea22fff11de1a3231b9f8c2d2ef..88e2456ea1e31782c278e0e2b1bebb63c59502bd 100644
--- a/api/src/schema.gql
+++ b/api/src/schema.gql
@@ -35,12 +35,10 @@ type Configuration {
 
   """Indicates if filters and formula are enabled"""
   hasFilters: Boolean
-  contactLink: String
   version: String!
   skipAuth: Boolean
   skipTos: Boolean
   enableSSO: Boolean
-  ontologyUrl: String
 }
 
 type Dataset {