diff --git a/bitbake/lib/bb/fetch2/__init__.py b/bitbake/lib/bb/fetch2/__init__.py
index fb6138b028..557025f701 100644
--- a/bitbake/lib/bb/fetch2/__init__.py
+++ b/bitbake/lib/bb/fetch2/__init__.py
@@ -197,6 +197,7 @@ def uri_replace(ud, uri_find, uri_replace, d):
     uri_decoded = list(decodeurl(ud.url))
     uri_find_decoded = list(decodeurl(uri_find))
     uri_replace_decoded = list(decodeurl(uri_replace))
+    logger.debug(2, "For url %s comparing %s to %s" % (uri_decoded, uri_find_decoded, uri_replace_decoded))
     result_decoded = ['', '', '', '', '', {}]
     for i in uri_find_decoded:
         loc = uri_find_decoded.index(i)
@@ -209,12 +210,18 @@ def uri_replace(ud, uri_find, uri_replace, d):
                     result_decoded[loc] = re.sub(i, uri_replace_decoded[loc], uri_decoded[loc])
                 if uri_find_decoded.index(i) == 2:
                     if ud.mirrortarball:
-                        result_decoded[loc] = os.path.join(os.path.dirname(result_decoded[loc]), os.path.basename(ud.mirrortarball))
+                        if result_decoded[loc].endswith("/"):
+                            result_decoded[loc] = os.path.dirname(result_decoded[loc])
+                        result_decoded[loc] = os.path.join(result_decoded[loc], os.path.basename(ud.mirrortarball))
                     elif ud.localpath:
-                        result_decoded[loc] = os.path.join(os.path.dirname(result_decoded[loc]), os.path.basename(ud.localpath))
+                        if result_decoded[loc].endswith("/"):
+                            result_decoded[loc] = os.path.dirname(result_decoded[loc])
+                        result_decoded[loc] = os.path.join(result_decoded[loc], os.path.basename(ud.localpath))
             else:
                 return ud.url
-    return encodeurl(result_decoded)
+    result = encodeurl(result_decoded)
+    logger.debug(2, "For url %s returning %s" % (ud.url, result))
+    return result
 
 methods = []
 urldata_cache = {}