diff --git a/include/yaml-cpp/node/detail/impl.h b/include/yaml-cpp/node/detail/impl.h
index 5931826..d7cdb00 100644
--- a/include/yaml-cpp/node/detail/impl.h
+++ b/include/yaml-cpp/node/detail/impl.h
@@ -32,7 +32,7 @@ struct get_idx<Key,
 
   static node* get(std::vector<node*>& sequence, const Key& key,
                    shared_memory_holder pMemory) {
-   if (key > sequence.size() || (key > 0 && !sequence[key-1]->is_defined()))
+    if (key > sequence.size() || (key > 0 && !sequence[key - 1]->is_defined()))
       return 0;
     if (key == sequence.size())
       sequence.push_back(&pMemory->create_node());