diff --git a/src/cargo/sources/config.rs b/src/cargo/sources/config.rs
index 1e9e39157122..e842a5ba72ee 100644
--- a/src/cargo/sources/config.rs
+++ b/src/cargo/sources/config.rs
@@ -239,7 +239,7 @@ restore the source replacement configuration to continue the build
         let mut srcs = Vec::new();
         if let Some(registry) = def.registry {
             let url = url(&registry, &format!("source.{}.registry", name))?;
-            srcs.push(SourceId::for_named_registry(&url, &name)?);
+            srcs.push(SourceId::for_registry(&url)?);
         }
         if let Some(local_registry) = def.local_registry {
             let path = local_registry.resolve_path(self.config);