diff --git a/src/core/course/components/format/core-course-format.html b/src/core/course/components/format/core-course-format.html
index 58fa13eae..de9a9ad44 100644
--- a/src/core/course/components/format/core-course-format.html
+++ b/src/core/course/components/format/core-course-format.html
@@ -9,10 +9,7 @@
 <core-dynamic-component [component]="courseFormatComponent" [data]="data">
     <!-- Course summary. By default we only display the course progress. -->
     <core-dynamic-component [component]="courseSummaryComponent" [data]="data">
-        <ion-list no-lines *ngIf="course.imageThumb || (course.progress != null && course.progress >= 0)" class="core-format-progress-list">
-            <div *ngIf="course.imageThumb" class="core-course-thumb">
-                <img [src]="course.imageThumb" core-external-content alt=""/>
-            </div>
+        <ion-list no-lines *ngIf="course.progress != null && course.progress >= 0" class="core-format-progress-list">
             <ion-item *ngIf="course.progress != null && course.progress >= 0" class="core-course-progress">
                 <core-progress-bar [progress]="course.progress"></core-progress-bar>
             </ion-item>
diff --git a/src/core/course/pages/section/section.ts b/src/core/course/pages/section/section.ts
index 991a67d93..19858d405 100644
--- a/src/core/course/pages/section/section.ts
+++ b/src/core/course/pages/section/section.ts
@@ -241,19 +241,6 @@ export class CoreCourseSectionPage implements OnDestroy {
                 });
             }));
 
-            // Get the overview files.
-            if (this.course.overviewfiles) {
-                this.course.imageThumb = this.course.overviewfiles[0] && this.course.overviewfiles[0].fileurl;
-            } else if (this.coursesProvider.isGetCoursesByFieldAvailable()) {
-                promises.push(this.coursesProvider.getCoursesByField('id', this.course.id).then((coursesInfo) => {
-                    if (coursesInfo[0] && coursesInfo[0].overviewfiles && coursesInfo[0].overviewfiles[0]) {
-                        this.course.imageThumb = coursesInfo[0].overviewfiles[0].fileurl;
-                    } else {
-                        this.course.imageThumb = false;
-                    }
-                }));
-            }
-
             // Load the course handlers.
             promises.push(this.courseOptionsDelegate.getHandlersToDisplay(this.injector, this.course, refresh, false)
                     .then((handlers) => {
@@ -330,7 +317,6 @@ export class CoreCourseSectionPage implements OnDestroy {
         promises.push(this.courseProvider.invalidateSections(this.course.id));
         promises.push(this.coursesProvider.invalidateUserCourses());
         promises.push(this.courseFormatDelegate.invalidateData(this.course, this.sections));
-        promises.push(this.coursesProvider.invalidateCoursesByField('id', this.course.id));
 
         if (this.sections) {
             promises.push(this.prefetchDelegate.invalidateCourseUpdates(this.course.id));
diff --git a/src/core/courses/components/course-progress/core-courses-course-progress.html b/src/core/courses/components/course-progress/core-courses-course-progress.html
index 01db00893..df001f2b0 100644
--- a/src/core/courses/components/course-progress/core-courses-course-progress.html
+++ b/src/core/courses/components/course-progress/core-courses-course-progress.html
@@ -1,6 +1,6 @@
 <ion-card [attr.course-color]="course.id % 10">
-    <div (click)="openCourse(course)" class="core-course-thumb" [class.core-course-color-img]="course.imageThumb">
-        <img *ngIf="course.imageThumb" [src]="course.imageThumb" core-external-content alt=""/>
+    <div (click)="openCourse(course)" class="core-course-thumb" [class.core-course-color-img]="course.courseImage">
+        <img *ngIf="course.courseImage" [src]="course.courseImage" core-external-content alt=""/>
         <core-icon name="fa-star" *ngIf="course.isfavourite"></core-icon>
     </div>
     <ion-item tappable text-wrap detail-none (click)="openCourse(course)" [title]="course.displayname || course.fullname" class="core-course-link" [class.item-disabled]="course.visible == 0">
diff --git a/src/core/courses/pages/course-preview/course-preview.html b/src/core/courses/pages/course-preview/course-preview.html
index cf62ca683..2a52bad10 100644
--- a/src/core/courses/pages/course-preview/course-preview.html
+++ b/src/core/courses/pages/course-preview/course-preview.html
@@ -10,8 +10,8 @@
     <core-loading [hideUntil]="dataLoaded">
 
         <ion-list *ngIf="course">
-            <div *ngIf="course.imageThumb" (click)="openCourse()" class="core-course-thumb">
-                <img [src]="course.imageThumb" core-external-content alt=""/>
+            <div *ngIf="course.courseImage" (click)="openCourse()" class="core-course-thumb">
+                <img [src]="course.courseImage" core-external-content alt=""/>
             </div>
             <a ion-item text-wrap (click)="openCourse()" [title]="course.fullname" [attr.detail-none]=" avoidOpenCourse || !canAccessCourse">
                 <core-icon name="fa-graduation-cap" fixed-width item-start></core-icon>
diff --git a/src/core/courses/pages/course-preview/course-preview.ts b/src/core/courses/pages/course-preview/course-preview.ts
index 703894eaa..ce2b0d7cd 100644
--- a/src/core/courses/pages/course-preview/course-preview.ts
+++ b/src/core/courses/pages/course-preview/course-preview.ts
@@ -101,7 +101,7 @@ export class CoreCoursesCoursePreviewPage implements OnDestroy {
         this.courseUrl = this.textUtils.concatenatePaths(currentSiteUrl, 'course/view.php?id=' + this.course.id);
         this.paypalReturnUrl = this.textUtils.concatenatePaths(currentSiteUrl, 'enrol/paypal/return.php');
         if (this.course.overviewfiles && this.course.overviewfiles.length > 0) {
-            this.course.imageThumb = this.course.overviewfiles[0].fileurl;
+            this.course.courseImage = this.course.overviewfiles[0].fileurl;
         }
 
         // Initialize the self enrol modal.
diff --git a/src/core/courses/providers/helper.ts b/src/core/courses/providers/helper.ts
index 87d168465..934d5e35a 100644
--- a/src/core/courses/providers/helper.ts
+++ b/src/core/courses/providers/helper.ts
@@ -36,13 +36,13 @@ export class CoreCoursesHelperProvider {
             course.displayname = courseByField.displayname;
 
             if (courseByField.overviewfiles && courseByField.overviewfiles[0]) {
-                course.imageThumb = courseByField.overviewfiles[0].fileurl;
+                course.courseImage = courseByField.overviewfiles[0].fileurl;
             } else {
-                course.imageThumb = false;
+                course.courseImage = false;
             }
         } else {
             delete course.displayname;
-            course.imageThumb = false;
+            course.courseImage = false;
         }
     }