diff --git a/bitbake/lib/bb/fetch2/__init__.py b/bitbake/lib/bb/fetch2/__init__.py
index 893ec6f6bd..b1cd6b25c2 100644
--- a/bitbake/lib/bb/fetch2/__init__.py
+++ b/bitbake/lib/bb/fetch2/__init__.py
@@ -469,6 +469,7 @@ def uri_replace(ud, uri_find, uri_replace, replacements, d, mirrortarball=None):
                     basename = os.path.basename(mirrortarball)
                     # Kill parameters, they make no sense for mirror tarballs
                     uri_decoded[5] = {}
+                    uri_find_decoded[5] = {}
                 elif ud.localpath and ud.method.supports_checksum(ud):
                     basename = os.path.basename(ud.localpath)
                 if basename: