diff --git a/meta/classes/dpkg-base.bbclass b/meta/classes/dpkg-base.bbclass
index ec8fbc1..4b9b782 100644
--- a/meta/classes/dpkg-base.bbclass
+++ b/meta/classes/dpkg-base.bbclass
@@ -46,7 +46,7 @@ python do_adjust_git() {
 
             if os.path.exists(alternates):
                 cmd = ["sed", "-i", alternates, "-e",
-                       "s|{}|/downloads|".format(d.getVar("DL_DIR"))]
+                       "s|\({}\(.*\)\)|\\1\\n/downloads\\2|".format(d.getVar("DL_DIR"))]
                 bb.note(' '.join(cmd))
                 if subprocess.call(cmd) != 0:
                     bb.fatal("git alternates adjustment failed")