diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index b8c984a8bfc38..1e7a4a276cb8a 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -6219,7 +6219,7 @@ ZEND_BEGIN_ARG_INFO(arginfo_reflection_function___construct, 0)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_reflection_function_invoke, 0, 0, 0)
-	ZEND_ARG_INFO(0, args)
+	ZEND_ARG_VARIADIC_INFO(0, args)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_INFO(arginfo_reflection_function_invokeArgs, 0)
@@ -6299,7 +6299,7 @@ ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_INFO(arginfo_reflection_method_invoke, 0)
 	ZEND_ARG_INFO(0, object)
-	ZEND_ARG_INFO(0, args)
+	ZEND_ARG_VARIADIC_INFO(0, args)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_INFO(arginfo_reflection_method_invokeArgs, 0)
diff --git a/ext/reflection/tests/bug74421.phpt b/ext/reflection/tests/bug74421.phpt
new file mode 100644
index 0000000000000..e549cc2ac48ef
--- /dev/null
+++ b/ext/reflection/tests/bug74421.phpt
@@ -0,0 +1,17 @@
+--TEST--
+Bug #74421 Wrong reflection on ReflectionFunction::invoke
+--FILE--
+<?php
+$rf = new ReflectionMethod(ReflectionFunction::class, 'invoke');
+var_dump($rf->isVariadic());
+var_dump($rf->getParameters()[0]->isVariadic());
+
+$rm = new ReflectionMethod(ReflectionMethod::class, 'invoke');
+var_dump($rm->isVariadic());
+var_dump($rm->getParameters()[1]->isVariadic());
+?>
+--EXPECT--
+bool(true)
+bool(true)
+bool(true)
+bool(true)