diff --git a/resources/src/mediawiki.api/mediawiki.api.category.js b/resources/src/mediawiki.api/mediawiki.api.category.js
index a90617d8add..7dd9730f779 100644
--- a/resources/src/mediawiki.api/mediawiki.api.category.js
+++ b/resources/src/mediawiki.api/mediawiki.api.category.js
@@ -73,7 +73,7 @@
 					var texts = [];
 					if ( data.query && data.query.allpages ) {
 						$.each( data.query.allpages, function ( i, category ) {
-							texts.push( new mw.Title( category.title ).getNameText() );
+							texts.push( new mw.Title( category.title ).getMainText() );
 						} );
 					}
 					return texts;
diff --git a/tests/qunit/QUnitTestResources.php b/tests/qunit/QUnitTestResources.php
index e861967e110..5cfd18f7582 100644
--- a/tests/qunit/QUnitTestResources.php
+++ b/tests/qunit/QUnitTestResources.php
@@ -71,6 +71,7 @@ return array(
 			'tests/qunit/suites/resources/mediawiki/mediawiki.user.test.js',
 			'tests/qunit/suites/resources/mediawiki/mediawiki.util.test.js',
 			'tests/qunit/suites/resources/mediawiki.api/mediawiki.api.test.js',
+			'tests/qunit/suites/resources/mediawiki.api/mediawiki.api.category.test.js',
 			'tests/qunit/suites/resources/mediawiki.api/mediawiki.api.parse.test.js',
 			'tests/qunit/suites/resources/mediawiki.api/mediawiki.api.watch.test.js',
 			'tests/qunit/suites/resources/mediawiki.special/mediawiki.special.recentchanges.test.js',
@@ -96,6 +97,7 @@ return array(
 			'jquery.tablesorter',
 			'jquery.textSelection',
 			'mediawiki.api',
+			'mediawiki.api.category',
 			'mediawiki.api.parse',
 			'mediawiki.api.watch',
 			'mediawiki.jqueryMsg',
diff --git a/tests/qunit/suites/resources/mediawiki.api/mediawiki.api.category.test.js b/tests/qunit/suites/resources/mediawiki.api/mediawiki.api.category.test.js
new file mode 100644
index 00000000000..a0c7daf1a06
--- /dev/null
+++ b/tests/qunit/suites/resources/mediawiki.api/mediawiki.api.category.test.js
@@ -0,0 +1,30 @@
+( function ( mw ) {
+	QUnit.module( 'mediawiki.api.category', QUnit.newMwEnvironment( {
+		setup: function () {
+			this.server = this.sandbox.useFakeServer();
+		}
+	} ) );
+
+	QUnit.test( '.getCategoriesByPrefix()', function ( assert ) {
+		QUnit.expect( 1 );
+
+		var api = new mw.Api();
+
+		api.getCategoriesByPrefix( 'Foo' ).done( function ( matches ) {
+			assert.deepEqual(
+				matches,
+				[ 'Food', 'Fool Supermarine S.6', 'Fools' ]
+			);
+		} );
+
+		this.server.respond( function ( req ) {
+			req.respond( 200, { 'Content-Type': 'application/json' },
+				'{ "query": { "allpages": [ ' +
+					'{ "title": "Category:Food" },' +
+					'{ "title": "Category:Fool Supermarine S.6" },' +
+					'{ "title": "Category:Fools" }' +
+					'] } }'
+			);
+		} );
+	} );
+}( mediaWiki ) );