diff --git a/plugins/performance-lab/includes/site-health/audit-enqueued-assets/helper.php b/plugins/performance-lab/includes/site-health/audit-enqueued-assets/helper.php
index 7b54647779..aeb1f7ee55 100644
--- a/plugins/performance-lab/includes/site-health/audit-enqueued-assets/helper.php
+++ b/plugins/performance-lab/includes/site-health/audit-enqueued-assets/helper.php
@@ -119,7 +119,7 @@ function perflab_aea_audit_blocking_assets(): array {
 			}
 
 			$href = $processor->get_attribute( 'href' );
-			if ( ! is_string( $href ) ) {
+			if ( ! is_string( $href ) || '' === trim( $href ) ) {
 				continue;
 			}
 
diff --git a/plugins/performance-lab/tests/includes/site-health/audit-enqueued-assets/test-audit-enqueued-assets.php b/plugins/performance-lab/tests/includes/site-health/audit-enqueued-assets/test-audit-enqueued-assets.php
index a99501b706..8c8a0ab4ad 100644
--- a/plugins/performance-lab/tests/includes/site-health/audit-enqueued-assets/test-audit-enqueued-assets.php
+++ b/plugins/performance-lab/tests/includes/site-health/audit-enqueued-assets/test-audit-enqueued-assets.php
@@ -168,6 +168,12 @@ public function test_perflab_aea_audit_enqueued_styles(): void {
 		wp_dequeue_style( 'style3' );
 		wp_enqueue_style( 'style-print', 'https://print-style.com', array(), null, 'print' );
 		wp_enqueue_style( 'style-no-href', 'https://no-href-style.com', array(), null );
+		/**
+		 * Enqueue style with empty href
+		 *
+		 * @see https://github.com/WordPress/performance/issues/2278
+		 */
+		wp_enqueue_style( 'style-empty-href', 'https://empty-href-style.com', array(), null );
 
 		// Filter to remove href attribute from a specific style handle.
 		add_filter(
@@ -176,6 +182,14 @@ static function ( $tag, $handle ) {
 				if ( 'style-no-href' === $handle ) {
 					$tag = str_replace( 'href=\'https://no-href-style.com\'', ' ', $tag );
 				}
+
+				if ( 'style-empty-href' === $handle ) {
+					$tag = str_replace(
+						'href=\'https://empty-href-style.com\'',
+						"href=''",
+						$tag
+					);
+				}
 				return $tag;
 			},
 			10,
@@ -242,6 +256,14 @@ static function ( $item ) {
 			}
 		);
 		$this->assertEmpty( $no_href_style );
+
+		$empty_href_style = array_filter(
+			$assets['styles'],
+			static function ( $item ) {
+				return 'https://empty-href-style.com' === $item['src'];
+			}
+		);
+		$this->assertEmpty( $empty_href_style );
 	}
 
 	/**