diff --git a/cmd/syncthing/main.go b/cmd/syncthing/main.go
index a9f24c08..763e99ff 100644
--- a/cmd/syncthing/main.go
+++ b/cmd/syncthing/main.go
@@ -725,7 +725,7 @@ func archiveLegacyConfig() {
 			l.Warnf("Cannot archive config:", err)
 			return
 		}
-		defer src.Close()
+		defer dst.Close()
 
 		l.Infoln("Archiving config.xml")
 		io.Copy(dst, src)