diff --git a/src/models/abstractModel.ts b/src/models/abstractModel.ts
index a0b76164..9592ec55 100644
--- a/src/models/abstractModel.ts
+++ b/src/models/abstractModel.ts
@@ -3,10 +3,10 @@ import {omitBy, isNil} from '@/helpers/utils'
 import type {Right} from '@/constants/rights'
 
 export interface IAbstract {
-	maxRight: Right | null
+	maxRight: Right | null // FIXME: should this be readonly?
 }
 
-export default class AbstractModel implements IAbstract {
+export default abstract class AbstractModel<Model extends IAbstract = IAbstract> implements IAbstract {
 
 	/**
 	 * The max right the user has on this object, as returned by the x-max-right header from the api.
diff --git a/src/services/abstractService.ts b/src/services/abstractService.ts
index 1cc74e9f..8f97bb37 100644
--- a/src/services/abstractService.ts
+++ b/src/services/abstractService.ts
@@ -40,7 +40,7 @@ function prepareParams(params: Record<string, unknown | unknown[]>) {
 	return objectToSnakeCase(params)
 }
 
-export default class AbstractService<Model extends IAbstract = IAbstract> {
+export default abstract class AbstractService<Model extends IAbstract = IAbstract> {
 
 	/////////////////////////////
 	// Initial variable definitions