diff --git a/resources/functionMap.php b/resources/functionMap.php
index 71866bb604e..4696ff21201 100644
--- a/resources/functionMap.php
+++ b/resources/functionMap.php
@@ -5468,7 +5468,7 @@
 'lstat' => ['array|false', 'filename'=>'string'],
 'ltrim' => ['string', 'str'=>'string', 'character_mask='=>'string'],
 'Lua::__call' => ['mixed', 'lua_func'=>'callable', 'args='=>'array', 'use_self='=>'int'],
-'Lua::__construct' => ['void', 'lua_script_file'=>'string'],
+'Lua::__construct' => ['void', 'lua_script_file='=>'string'],
 'Lua::assign' => ['mixed', 'name'=>'string', 'value'=>'string'],
 'Lua::call' => ['mixed', 'lua_func'=>'callable', 'args='=>'array', 'use_self='=>'int'],
 'Lua::eval' => ['mixed', 'statements'=>'string'],
diff --git a/tests/PHPStan/Rules/Classes/InstantiationRuleTest.php b/tests/PHPStan/Rules/Classes/InstantiationRuleTest.php
index ddf9c63f854..5f83c21b6e9 100644
--- a/tests/PHPStan/Rules/Classes/InstantiationRuleTest.php
+++ b/tests/PHPStan/Rules/Classes/InstantiationRuleTest.php
@@ -646,4 +646,9 @@ public function testBug14138(): void
 		]);
 	}
 
+	public function testBug14499(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-14499.php'], []);
+	}
+
 }
diff --git a/tests/PHPStan/Rules/Classes/data/bug-14499.php b/tests/PHPStan/Rules/Classes/data/bug-14499.php
new file mode 100644
index 00000000000..d738e5b30ce
--- /dev/null
+++ b/tests/PHPStan/Rules/Classes/data/bug-14499.php
@@ -0,0 +1,6 @@
+<?php
+
+namespace Bug14499;
+
+$lua = new \Lua();
+$lua2 = new \Lua('/path/to/script.lua');