diff --git a/rules-tests/DeadCode/Rector/Assign/RemoveUnusedVariableAssignRector/Fixture/create_stub_in_test.php.inc b/rules-tests/DeadCode/Rector/Assign/RemoveUnusedVariableAssignRector/Fixture/create_stub_in_test.php.inc
new file mode 100644
index 00000000000..c893c833c4b
--- /dev/null
+++ b/rules-tests/DeadCode/Rector/Assign/RemoveUnusedVariableAssignRector/Fixture/create_stub_in_test.php.inc
@@ -0,0 +1,30 @@
+<?php
+
+namespace Rector\Tests\DeadCode\Rector\Assign\RemoveUnusedVariableAssignRector\Fixture;
+
+use PHPUnit\Framework\TestCase;
+
+final class CreateStubInTest extends TestCase
+{
+    public function test($params)
+    {
+        $user = $this->createStub('SomeClass');
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\DeadCode\Rector\Assign\RemoveUnusedVariableAssignRector\Fixture;
+
+use PHPUnit\Framework\TestCase;
+
+final class CreateStubInTest extends TestCase
+{
+    public function test($params)
+    {
+    }
+}
+
+?>
diff --git a/rules/DeadCode/SideEffect/SideEffectNodeDetector.php b/rules/DeadCode/SideEffect/SideEffectNodeDetector.php
index 6e7b83276d6..5e3c60a3b0f 100644
--- a/rules/DeadCode/SideEffect/SideEffectNodeDetector.php
+++ b/rules/DeadCode/SideEffect/SideEffectNodeDetector.php
@@ -96,7 +96,7 @@ private function isTestMock(MethodCall|StaticCall $node): bool
             return false;
         }
 
-        return $this->nodeNameResolver->isName($node->name, 'createMock');
+        return $this->nodeNameResolver->isNames($node->name, ['createMock', 'createStub']);
     }
 
     private function isPhpParser(New_ $new): bool