diff --git a/src/runtime2/branch.rs b/src/runtime2/branch.rs
index 4b3e5a79740ff5ffd7da36ce8f791911057d3739..cb605fd86e7df443c8f41bf660a1d411bebcd52c 100644
--- a/src/runtime2/branch.rs
+++ b/src/runtime2/branch.rs
@@ -15,7 +15,7 @@ pub struct BranchId {
 
 impl BranchId {
     #[inline]
-    fn new_invalid() -> Self {
+    pub(crate) fn new_invalid() -> Self {
         return Self{ index: 0 };
     }