diff --git a/src/branches.cpp b/src/branches.cpp
index c6c22b2f..db8ff380 100644
--- a/src/branches.cpp
+++ b/src/branches.cpp
@@ -453,6 +453,9 @@ void
 Branches::find_and_set_mode_ro()
 {
   auto impl = std::atomic_load(&_impl);
+  auto new_impl = std::make_shared<Branches::Impl>(impl->minfreespace());
+
+  *new_impl = *impl;
 
   for(auto &branch : *impl)
     {