diff --git a/src/addons/qtype/ddmarker/classes/ddmarker.ts b/src/addons/qtype/ddmarker/classes/ddmarker.ts
index 98d937316..49fddf82d 100644
--- a/src/addons/qtype/ddmarker/classes/ddmarker.ts
+++ b/src/addons/qtype/ddmarker/classes/ddmarker.ts
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 import { CoreDomUtils } from '@services/utils/dom';
-import { CoreTextUtils } from '@services/utils/text';
+import { CoreText } from '@singletons/text';
 import { CoreCoordinates, CoreDom } from '@singletons/dom';
 import { CoreEventObserver } from '@singletons/events';
 import { CoreLogger } from '@singletons/logger';
@@ -267,7 +267,7 @@ export class AddonQtypeDdMarkerQuestion {
         }
 
         // Check that a function to draw this shape exists.
-        const drawFunc = 'drawShape' + CoreTextUtils.ucFirst(shape);
+        const drawFunc = 'drawShape' + CoreText.capitalize(shape);
         if (!(this[drawFunc] instanceof Function)) {
             return;
         }
diff --git a/src/core/features/course/classes/main-resource-component.ts b/src/core/features/course/classes/main-resource-component.ts
index 24de44d23..d5c4f064c 100644
--- a/src/core/features/course/classes/main-resource-component.ts
+++ b/src/core/features/course/classes/main-resource-component.ts
@@ -33,6 +33,7 @@ import { CoreCourseModulePrefetchDelegate } from '../services/module-prefetch-de
 import { CoreAnalytics, CoreAnalyticsEventType } from '@services/analytics';
 import { CoreUrl } from '@singletons/url';
 import { CoreTime } from '@singletons/time';
+import { CoreText } from '@singletons/text';
 
 /**
  * Result of a resource download.
@@ -232,7 +233,7 @@ export class CoreCourseModuleMainResourceComponent implements OnInit, OnDestroy,
         const lastDownloaded =
                 await CoreCourseHelper.getModulePackageLastDownloaded(this.module, this.component);
 
-        this.downloadTimeReadable = CoreTextUtils.ucFirst(lastDownloaded.downloadTimeReadable);
+        this.downloadTimeReadable = CoreText.capitalize(lastDownloaded.downloadTimeReadable);
     }
 
     /**
diff --git a/src/core/features/course/components/module-summary/module-summary.ts b/src/core/features/course/components/module-summary/module-summary.ts
index 5b87b840c..edaae3b37 100644
--- a/src/core/features/course/components/module-summary/module-summary.ts
+++ b/src/core/features/course/components/module-summary/module-summary.ts
@@ -28,7 +28,7 @@ import { CoreFilepool } from '@services/filepool';
 import { CoreNavigator } from '@services/navigator';
 import { CoreSites } from '@services/sites';
 import { CoreDomUtils } from '@services/utils/dom';
-import { CoreTextUtils } from '@services/utils/text';
+import { CoreText } from '@singletons/text';
 import { CoreUtils } from '@services/utils/utils';
 import { ModalController, NgZone } from '@singletons';
 import { CoreEventObserver, CoreEvents } from '@singletons/events';
@@ -222,7 +222,7 @@ export class CoreCourseModuleSummaryComponent implements OnInit, OnDestroy {
 
         if (this.canPrefetch) {
             if (moduleInfo.downloadTime && moduleInfo.downloadTime > 0) {
-                this.downloadTimeReadable = CoreTextUtils.ucFirst(moduleInfo.downloadTimeReadable);
+                this.downloadTimeReadable = CoreText.capitalize(moduleInfo.downloadTimeReadable);
             }
             this.prefetchLoading = moduleInfo.status === DownloadStatus.DOWNLOADING;
             this.prefetchDisabled = moduleInfo.status === DownloadStatus.DOWNLOADED;
diff --git a/src/core/services/utils/mimetype.ts b/src/core/services/utils/mimetype.ts
index 5bbf67724..3125c6bf9 100644
--- a/src/core/services/utils/mimetype.ts
+++ b/src/core/services/utils/mimetype.ts
@@ -16,7 +16,7 @@ import { Injectable } from '@angular/core';
 import { FileEntry } from '@awesome-cordova-plugins/file/ngx';
 
 import { CoreFile } from '@services/file';
-import { CoreTextUtils } from '@services/utils/text';
+import { CoreText } from '@singletons/text';
 import { makeSingleton, Translate } from '@singletons';
 import { CoreLogger } from '@singletons/logger';
 import { CoreWSFile } from '@services/ws';
@@ -466,7 +466,7 @@ export class CoreMimetypeUtilsProvider {
             const value = attr[key];
             translateParams[key] = value;
             translateParams[key.toUpperCase()] = value.toUpperCase();
-            translateParams[CoreTextUtils.ucFirst(key)] = CoreTextUtils.ucFirst(value);
+            translateParams[CoreText.capitalize(key)] = CoreText.capitalize(value);
         }
 
         // MIME types may include + symbol but this is not permitted in string ids.
@@ -486,7 +486,7 @@ export class CoreMimetypeUtilsProvider {
         }
 
         if (capitalise) {
-            result = CoreTextUtils.ucFirst(result);
+            result = CoreText.capitalize(result);
         }
 
         return result;
diff --git a/src/core/services/utils/text.ts b/src/core/services/utils/text.ts
index a40bcdbd9..2bfb864ed 100644
--- a/src/core/services/utils/text.ts
+++ b/src/core/services/utils/text.ts
@@ -28,6 +28,7 @@ import { CorePath } from '@singletons/path';
 import { CorePlatform } from '@services/platform';
 import { ContextLevel } from '@/core/constants';
 import { CoreDom } from '@singletons/dom';
+import { CoreText } from '@singletons/text';
 
 /**
  * Different type of errors the app can treat.
@@ -1007,9 +1008,10 @@ export class CoreTextUtilsProvider {
      *
      * @param text Text to treat.
      * @returns Treated text.
+     * @deprecated since 4.5. Use CoreText.capitalize instead.
      */
     ucFirst(text: string): string {
-        return text.charAt(0).toUpperCase() + text.slice(1);
+        return CoreText.capitalize(text);
     }
 
     /**
diff --git a/src/core/singletons/text.ts b/src/core/singletons/text.ts
index 19b15a8b8..0a60c5a48 100644
--- a/src/core/singletons/text.ts
+++ b/src/core/singletons/text.ts
@@ -95,4 +95,14 @@ export class CoreText {
         });
     }
 
+    /**
+     * Make a string's first character uppercase.
+     *
+     * @param text Text to treat.
+     * @returns Treated text.
+     */
+    static capitalize(text: string): string {
+        return text.charAt(0).toUpperCase() + text.slice(1);
+    }
+
 }