diff --git a/linkcheck/Config.py b/linkcheck/Config.py
index 62f408bd..29e09a14 100644
--- a/linkcheck/Config.py
+++ b/linkcheck/Config.py
@@ -269,9 +269,12 @@ class Configuration (dict):
 
 
     def getUrl (self):
+        """get first url in queue and return it"""
         self.urlsLock.acquire()
         try:
-            return self.urls.pop()
+            u = self.urls[0]
+            del self.urls[0]
+            return u
         finally:
             self.urlsLock.release()
 
diff --git a/linkcheck/UrlData.py b/linkcheck/UrlData.py
index a1030d12..094f11a7 100644
--- a/linkcheck/UrlData.py
+++ b/linkcheck/UrlData.py
@@ -604,6 +604,7 @@ class UrlData (object):
                 base = codebase
             else:
                 base = baseRef
+            debug(NIGHTMARE, "Put url %r in queue"%url)
             self.config.appendUrl(GetUrlDataFrom(url,
                                   self.recursionLevel+1, self.config,
                                   parentName=self.url, baseRef=base,