diff --git a/phpunit.xml b/phpunit.xml
index 5bd0e6abf2b..b4e12f21875 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -6,6 +6,7 @@
     colors="true"
     executionOrder="defects"
     defaultTestSuite="main"
+    displayDetailsOnTestsThatTriggerWarnings="true"
 >
     <testsuites>
         <testsuite name="main">
diff --git a/rules/CodingStyle/Application/UseImportsAdder.php b/rules/CodingStyle/Application/UseImportsAdder.php
index c166371ebc4..c63530f4c5e 100644
--- a/rules/CodingStyle/Application/UseImportsAdder.php
+++ b/rules/CodingStyle/Application/UseImportsAdder.php
@@ -116,7 +116,7 @@ private function mirrorUseComments(array $stmts, array $newUses, int $indexStmt
             return;
         }
 
-        if ($stmts[$indexStmt] instanceof Use_) {
+        if (isset($stmts[$indexStmt]) && $stmts[$indexStmt] instanceof Use_) {
             $comments = (array) $stmts[$indexStmt]->getAttribute(AttributeKey::COMMENTS);
 
             if ($comments !== []) {