diff --git a/tests/parser/ParserTestRunner.php b/tests/parser/ParserTestRunner.php
index 220ec5719f1..7550ec2138d 100644
--- a/tests/parser/ParserTestRunner.php
+++ b/tests/parser/ParserTestRunner.php
@@ -590,14 +590,16 @@ class ParserTestRunner {
 		static $testInterwikis = [
 			[
 				'iw_prefix' => 'local',
-				'iw_url' => 'http://doesnt.matter.org/$1',
-				'iw_local' => 0,
+				// This is a "local interwiki" (see wgLocalInterwikis elsewhere in this file)
+				'iw_url' => 'http://example.org/wiki/$1',
+				'iw_local' => 1,
 			],
 			// Local interwiki that matches a namespace name (T228616)
 			[
 				'iw_prefix' => 'project',
-				'iw_url' => 'http://doesnt.matter.org/$1',
-				'iw_local' => 0,
+				// This is a "local interwiki" (see wgLocalInterwikis elsewhere in this file)
+				'iw_url' => 'http://example.org/wiki/$1',
+				'iw_local' => 1,
 			],
 			[
 				'iw_prefix' => 'wikipedia',
@@ -638,7 +640,8 @@ class ParserTestRunner {
 			],
 			[
 				'iw_prefix' => 'mi',
-				'iw_url' => 'http://mi.wikipedia.org/wiki/$1',
+				// This is a "local interwiki" (see wgLocalInterwikis elsewhere in this file)
+				'iw_url' => 'http://example.org/wiki/$1',
 				'iw_local' => 1,
 			],
 			[
@@ -687,6 +690,7 @@ class ParserTestRunner {
 
 		// This affects title normalization in links. It invalidates
 		// MediaWikiTitleCodec objects.
+		// These interwikis should have 'iw_url' that matches wgServer.
 		$setup['wgLocalInterwikis'] = [ 'local', 'project', 'mi' ];
 		$reset = function () {
 			$this->resetTitleServices();
diff --git a/tests/parser/parserTests.txt b/tests/parser/parserTests.txt
index 025954a0228..1052594a4ec 100644
--- a/tests/parser/parserTests.txt
+++ b/tests/parser/parserTests.txt
@@ -26577,7 +26577,7 @@ Serialize interwiki links pointing to the current wiki as plain wiki links (T678
 !! options
 parsoid=html2wt
 !! html/parsoid
-<p><a rel="mw:ExtLink" href="http://mi.wikipedia.org/wiki/Foo">Foo</a></p>
+<p><a rel="mw:ExtLink" href="http://example.org/wiki/Foo">Foo</a></p>
 !! wikitext
 [[Foo]]
 !! end