diff --git a/scrapy/contrib/spidermanager.py b/scrapy/contrib/spidermanager.py
index 45fb179e4..21a96a128 100644
--- a/scrapy/contrib/spidermanager.py
+++ b/scrapy/contrib/spidermanager.py
@@ -73,10 +73,11 @@ class TwistedPluginSpiderManager(object):
             sys.stderr.write("Interrupted while loading Scrapy spiders\n")
             sys.exit(2)
 
-    def close_domain(self, domain):
+    def close_spider(self, spider):
         """Reload spider module to release any resources held on to by the
         spider
         """
+        domain = spider.domain_name
         if domain not in self._spiders:
             return
         spider = self._spiders[domain]
diff --git a/scrapy/core/engine.py b/scrapy/core/engine.py
index 62024d103..256e0f3d7 100644
--- a/scrapy/core/engine.py
+++ b/scrapy/core/engine.py
@@ -301,7 +301,7 @@ class ExecutionEngine(object):
         send_catch_log(signal=signals.domain_closed, sender=self.__class__, \
             domain=domain, spider=spider, reason=reason)
         stats.close_domain(domain, reason=reason)
-        spiders.close_domain(domain)
+        spiders.close_spider(spider)
         log.msg("Domain closed (%s)" % reason, domain=domain) 
         self._mainloop()
         if not self.open_spiders: