diff --git a/src/libstore/build/goal.cc b/src/libstore/build/goal.cc
index 8e2b6199a0b..92437040cbe 100644
--- a/src/libstore/build/goal.cc
+++ b/src/libstore/build/goal.cc
@@ -219,7 +219,7 @@ Goal::Done Goal::amDone(ExitCode result, std::optional<Error> ex)
                 /* If we failed and keepGoing is not set, we remove all
                    remaining waitees. */
                 for (auto & g : goal->waitees) {
-                    g->waiters.extract(goal);
+                    g->waiters.erase(goal);
                 }
                 goal->waitees.clear();