diff --git a/collectors/php_errors.php b/collectors/php_errors.php
index 9e0004bd9..9aaf0149b 100644
--- a/collectors/php_errors.php
+++ b/collectors/php_errors.php
@@ -124,7 +124,7 @@ public function tear_down() {
 			error_reporting( $this->error_reporting );
 		}
 
-		if ( false !== $this->display_errors ) {
+		if ( is_string( $this->display_errors ) ) {
 			ini_set( 'display_errors', $this->display_errors );
 		}