diff --git a/lua.c b/lua.c
index 8809f4d..d5f4acd 100755
--- a/lua.c
+++ b/lua.c
@@ -174,6 +174,11 @@ static void php_lua_dtor_object(zend_object *object) /* {{{ */ {
 	php_lua_object *lua_obj = php_lua_obj_from_obj(object);
 
 	zend_object_std_dtor(&(lua_obj->obj));
+}
+/* }}} */
+
+static void php_lua_free_object(zend_object *object) /* {{{ */ {
+	php_lua_object *lua_obj = php_lua_obj_from_obj(object);
 
 	if (lua_obj->L) {
 		lua_close(lua_obj->L);
@@ -831,7 +836,7 @@ PHP_MINIT_FUNCTION(lua) {
 	memcpy(&lua_object_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
 	lua_object_handlers.offset = XtOffsetOf(php_lua_object, obj);
 	lua_object_handlers.dtor_obj = php_lua_dtor_object;
-	lua_object_handlers.free_obj = NULL;
+	lua_object_handlers.free_obj = php_lua_free_object;
 	lua_object_handlers.clone_obj = NULL;
 	lua_object_handlers.write_property = php_lua_write_property;
 	lua_object_handlers.read_property  = php_lua_read_property;
diff --git a/package.xml b/package.xml
index 6378aae..d32a969 100644
--- a/package.xml
+++ b/package.xml
@@ -35,7 +35,7 @@
  </stability>
  <license uri="http://www.php.net/license">PHP</license>
  <notes>
-  - Fixed issue #20 (PHP 7: Lua::eval(): unsupported type `unknown' for lua)
+  - Fixed bug #73964 (Segmentation fault)
  </notes>
  <contents> 
   <dir name="/"> 
@@ -65,6 +65,7 @@
     <file name="issue012.phpt" role="test" />
     <file name="bug65097.phpt" role="test" />
     <file name="bug71997.phpt" role="test" />
+    <file name="bug73964.phpt" role="test" />
    </dir>
   </dir> 
  </contents> 
diff --git a/tests/bug73964.phpt b/tests/bug73964.phpt
new file mode 100644
index 0000000..de03c54
--- /dev/null
+++ b/tests/bug73964.phpt
@@ -0,0 +1,45 @@
+--TEST--
+Bug #73964 (Segmentation fault (11))
+--SKIPIF--
+<?php
+if (!extension_loaded("lua")) print "skip lua extension missing";
+?>
+--FILE--
+<?php
+
+class LuaTest
+{
+	function __construct()
+	{ 
+		$this->lua = new Lua();
+		$this->lua->registerCallback("log", array($this, "API_LuaLog"));   
+	}
+
+
+	function API_LuaLog( $entry)
+	{
+		echo("from lua: $entry");
+	}   
+
+	public function RunTest()
+	{
+		$this->lua->eval(<<<CODE
+function TestFunc(str)
+	 log(str)
+
+end
+
+CODE
+	);               
+		$GamePackage = $this->lua->RootTable;
+
+		$this->lua->call("TestFunc", array("okey"));
+	}
+}
+
+
+$a = new LuaTest();
+$a->runtest();
+?>
+--EXPECT--
+from lua: okey