diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
index f3ffe9a27611..081425cc4742 100644
--- a/src/bootstrap/config.rs
+++ b/src/bootstrap/config.rs
@@ -403,6 +403,7 @@ impl Config {
             config.docdir = install.docdir.clone().map(PathBuf::from);
             config.bindir = install.bindir.clone().map(PathBuf::from);
             config.libdir = install.libdir.clone().map(PathBuf::from);
+            config.libdir_relative = install.libdir.clone().map(PathBuf::from);
             config.mandir = install.mandir.clone().map(PathBuf::from);
         }