diff --git a/rules-tests/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector/Fixture/skip_no_second_arg.php.inc b/rules-tests/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector/Fixture/skip_no_second_arg.php.inc
new file mode 100644
index 00000000..367af616
--- /dev/null
+++ b/rules-tests/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector/Fixture/skip_no_second_arg.php.inc
@@ -0,0 +1,15 @@
+<?php
+
+namespace Rector\PHPUnit\Tests\PHPUnit90\Rector\MethodCall\SpecificAssertContainsWithoutIdentityRector\Fixture;
+
+use PHPUnit\Framework\TestCase;
+use stdClass;
+
+final class SkipNoSecondArg extends TestCase
+{
+    public function test()
+    {
+        $objects = [ new stdClass(), new stdClass(), new stdClass() ];
+        $this->transport()->queue()->assertContains(new stdClass());
+    }
+}
\ No newline at end of file
diff --git a/rules/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector.php b/rules/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector.php
index 0e6cf40d..66a220cc 100644
--- a/rules/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector.php
+++ b/rules/PHPUnit90/Rector/MethodCall/SpecificAssertContainsWithoutIdentityRector.php
@@ -92,6 +92,10 @@ public function refactor(Node $node): ?Node
             return null;
         }
 
+        if (count($node->getArgs()) < 2) {
+            return null;
+        }
+
         // when second argument is string: do nothing
         $secondArgType = $this->getType($node->getArgs()[1]->value);
         if ($secondArgType instanceof StringType) {