# must fail: timed_OS_base_ready_first timed_OS_clock_ticked_0 timed_OS_ready_then_200_base_flipped
# the base is ready only when its refinements are done (session::FetchSession::advance_components)
diff --git a/wai/wai-rs/src/http_binding/session.rs b/wai/wai-rs/src/http_binding/session.rs
index ec31518e..e8478b40 100644
--- a/wai/wai-rs/src/http_binding/session.rs
+++ b/wai/wai-rs/src/http_binding/session.rs
@@ -766,7 +766,7 @@ impl FetchSession {
                 requests: s.requests,
             }
         };
-        if !base_pending && self.base.is_none() {
+        if !pending && self.base.is_none() {
             // §10.1: the base is presentable now, whatever its refinements do.
             self.base = Some((assemble(&parts, true, self), self.now_ms));
         }