diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index c4f0a98..0f56d70 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -565,7 +565,7 @@ void eraseChild(Node *self, uint8_t index, NodeAllocators *allocators) {
     assert(lastChildrenIndex >= 0);
     if (toRemoveChildrenIndex != lastChildrenIndex) {
       self48->children[toRemoveChildrenIndex] =
-          std::exchange(self48->children[lastChildrenIndex], nullptr);
+          self48->children[lastChildrenIndex];
       self48->index[self48->children[toRemoveChildrenIndex]->parentsIndex] =
           toRemoveChildrenIndex;
     }