diff --git a/src/bootstrap/src/lib.rs b/src/bootstrap/src/lib.rs
index d9a4da8f3cc01..9906dca42885f 100644
--- a/src/bootstrap/src/lib.rs
+++ b/src/bootstrap/src/lib.rs
@@ -1318,7 +1318,7 @@ impl Build {
         if let Some(path) = configured {
             return Some(path.join("lib").join(target.to_string()));
         }
-        let mut env_root = PathBuf::from(std::env::var_os("WASI_SDK_PATH")?);
+        let mut env_root = self.wasi_sdk_path.clone()?;
         env_root.push("share");
         env_root.push("wasi-sysroot");
         env_root.push("lib");