diff --git a/lib/compat/wordpress-6.5/interactivity-api/class-wp-interactivity-api.php b/lib/compat/wordpress-6.5/interactivity-api/class-wp-interactivity-api.php
index 3bfade3aa4aa7..1fc757accf6f6 100644
--- a/lib/compat/wordpress-6.5/interactivity-api/class-wp-interactivity-api.php
+++ b/lib/compat/wordpress-6.5/interactivity-api/class-wp-interactivity-api.php
@@ -800,14 +800,14 @@ public function print_router_loading_and_screen_reader_markup() {
 			echo <<<HTML
 			<div
 				class="wp-interactivity-router-loading-bar"
-				data-wp-interactive='{"namespace":"core/router"}'
+				data-wp-interactive="core/router"
 				data-wp-class--start-animation="state.navigation.hasStarted"
 				data-wp-class--finish-animation="state.navigation.hasFinished"
 			></div>
 			<div
 				class="screen-reader-text"
 				aria-live="polite"
-				data-wp-interactive='{"namespace":"core/router"}'
+				data-wp-interactive="core/router"
 				data-wp-text="state.navigation.message"
 			></div>
 HTML;
diff --git a/packages/e2e-tests/plugins/interactive-blocks/router-navigate/render.php b/packages/e2e-tests/plugins/interactive-blocks/router-navigate/render.php
index 4abcee3de2c39..0b8e6e1012d1a 100644
--- a/packages/e2e-tests/plugins/interactive-blocks/router-navigate/render.php
+++ b/packages/e2e-tests/plugins/interactive-blocks/router-navigate/render.php
@@ -18,7 +18,7 @@
 ?>
 
 <div
-	data-wp-interactive='{ "namespace": "router" }'
+	data-wp-interactive="router"
 	data-wp-router-region="region-1"
 >
 	<h2 data-testid="title"><?php echo $attributes['title']; ?></h2>
