@@ -48,7 +48,7 @@ public function processNode(Node $node, Scope $scope): array
 $method = $constantString->getValue();
 $type = $scope->getType($node->var);
 
-$error = $this->checkCallOnType($type, $method);
+$error = $this->checkCallOnType($scope, $type, $method);
 if ($error !== null) {
 $errors[] = $error;
 continue;
@@ -67,7 +67,7 @@ public function processNode(Node $node, Scope $scope): array
 }
 
 $varType = $scope->getType($node->var->var);
-$error = $this->checkCallOnType($varType, $method);
+$error = $this->checkCallOnType($scope, $varType, $method);
 if ($error === null) {
 continue;
 }
@@ -78,14 +78,16 @@ public function processNode(Node $node, Scope $scope): array
 return $errors;
 }
 
-private function checkCallOnType(Type $type, string $method): ?IdentifierRuleError
+private function checkCallOnType(Scope $scope, Type $type, string $method): ?IdentifierRuleError
 {
+$methodReflection = $scope->getMethodReflection($type, $method);
+if ($methodReflection !== null) {
+return null;
+}
+
 if (
-(
-in_array(MockObject::class, $type->getObjectClassNames(), true)
-|| in_array(Stub::class, $type->getObjectClassNames(), true)
-)
-&& !$type->hasMethod($method)->yes()
+in_array(MockObject::class, $type->getObjectClassNames(), true)
+|| in_array(Stub::class, $type->getObjectClassNames(), true)
 ) {
 $mockClasses = array_filter($type->getObjectClassNames(), static fn (string $class): bool => $class !== MockObject::class && $class !== Stub::class);
 if (count($mockClasses) === 0) {

@@ -36,6 +36,11 @@ public function testRule(): void
 $this->analyse([__DIR__ . '/data/mock-method-call.php'], $expectedErrors);
 }
 
+public function testBug227(): void
+{
+$this->analyse([__DIR__ . '/data/bug-227.php'], []);
+}
+
 /**
 * @return string[]
 */

@@ -0,0 +1,42 @@
+<?php
+
+namespace Bug227;
+
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use stdClass;
+
+class Foo
+{
+
+public function addCacheTags(array $tags)
+{
+
+}
+
+public function getLanguage(): stdClass
+{
+
+}
+
+}
+
+class SomeTest extends TestCase
+{
+
+protected MockObject|Foo $tsfe;
+
+protected function setUp(): void
+{
+$this->tsfe = $this->getMockBuilder(Foo::class)
+->onlyMethods(['addCacheTags', 'getLanguage'])
+->disableOriginalConstructor()
+->getMock();
+$this->tsfe->method('getLanguage')->willReturn('aaa');
+}
+
+public function testSometest(): void
+{
+$this->tsfe->expects(self::once())->method('addCacheTags');
+}
+}