diff --git a/src/core/courses/providers/courses.ts b/src/core/courses/providers/courses.ts
index f869e467a..b0529d926 100644
--- a/src/core/courses/providers/courses.ts
+++ b/src/core/courses/providers/courses.ts
@@ -15,7 +15,7 @@
 import { Injectable } from '@angular/core';
 import { CoreEventsProvider } from '@providers/events';
 import { CoreLoggerProvider } from '@providers/logger';
-import { CoreSitesProvider, ReadingStrategy } from '@providers/sites';
+import { CoreSitesProvider, CoreSitesReadingStrategy } from '@providers/sites';
 import { CoreSite } from '@classes/site';
 
 /**
@@ -774,7 +774,7 @@ export class CoreCoursesProvider {
      * @param siteId Site to get the courses from. If not defined, use current site.
      * @return Promise resolved with the courses.
      */
-    getUserCourses(preferCache?: boolean, siteId?: string, strategy?: ReadingStrategy): Promise<any[]> {
+    getUserCourses(preferCache?: boolean, siteId?: string, strategy?: CoreSitesReadingStrategy): Promise<any[]> {
         return this.sitesProvider.getSite(siteId).then((site) => {
 
             const userId = site.getUserId(),
diff --git a/src/core/grades/providers/helper.ts b/src/core/grades/providers/helper.ts
index ae8cc9071..7bdfc7b67 100644
--- a/src/core/grades/providers/helper.ts
+++ b/src/core/grades/providers/helper.ts
@@ -15,7 +15,7 @@
 import { Injectable } from '@angular/core';
 import { NavController } from 'ionic-angular';
 import { CoreLoggerProvider } from '@providers/logger';
-import { CoreSitesProvider, ReadingStrategy } from '@providers/sites';
+import { CoreSitesProvider, CoreSitesReadingStrategy } from '@providers/sites';
 import { CoreCoursesProvider } from '@core/courses/providers/courses';
 import { CoreCourseProvider } from '@core/course/providers/course';
 import { CoreGradesProvider } from './grades';
@@ -203,7 +203,7 @@ export class CoreGradesHelperProvider {
         let coursesWereMissing;
 
         try {
-            const courses = await this.coursesProvider.getUserCourses(undefined, undefined, ReadingStrategy.OnlyCache);
+            const courses = await this.coursesProvider.getUserCourses(undefined, undefined, CoreSitesReadingStrategy.OnlyCache);
 
             const coursesMap = this.utils.arrayToObject(courses, 'id');
 
@@ -216,7 +216,7 @@ export class CoreGradesHelperProvider {
         if (coursesWereMissing) {
             const coursesPromise = this.coursesProvider.isGetCoursesByFieldAvailable()
                 ? this.coursesProvider.getCoursesByField('ids', grades.map((grade) => grade.courseid).join(','))
-                : this.coursesProvider.getUserCourses(undefined, undefined, ReadingStrategy.PreferNetwork);
+                : this.coursesProvider.getUserCourses(undefined, undefined, CoreSitesReadingStrategy.PreferNetwork);
 
             const courses = await coursesPromise;
 
diff --git a/src/providers/sites.ts b/src/providers/sites.ts
index 0094d7096..3458aaefd 100644
--- a/src/providers/sites.ts
+++ b/src/providers/sites.ts
@@ -158,7 +158,7 @@ export interface CoreSiteSchema {
     migrate?(db: SQLiteDB, oldVersion: number, siteId: string): Promise<any> | void;
 }
 
-export const enum ReadingStrategy {
+export const enum CoreSitesReadingStrategy {
     OnlyCache,
     PreferCache,
     PreferNetwork,
@@ -1743,18 +1743,18 @@ export class CoreSitesProvider {
      * @param strategy Reading strategy.
      * @return PreSets options object.
      */
-    getReadingStrategyPreSets(strategy: ReadingStrategy): CoreSiteWSPreSets {
+    getReadingStrategyPreSets(strategy: CoreSitesReadingStrategy): CoreSiteWSPreSets {
         switch (strategy) {
-            case ReadingStrategy.PreferCache:
+            case CoreSitesReadingStrategy.PreferCache:
                 return {
                     omitExpires: true,
                 };
-            case ReadingStrategy.OnlyCache:
+            case CoreSitesReadingStrategy.OnlyCache:
                 return {
                     omitExpires: true,
                     forceOffline: true,
                 };
-            case ReadingStrategy.PreferNetwork:
+            case CoreSitesReadingStrategy.PreferNetwork:
             default:
                 return {};
         }