diff --git a/db/version_set.cc b/db/version_set.cc
index 19633537f3..8d85fce1c2 100644
--- a/db/version_set.cc
+++ b/db/version_set.cc
@@ -1392,6 +1392,7 @@ void VersionSet::SetupOtherInputs(Compaction* c) {
 
   current_->GetOverlappingInputs(level + 1, &smallest, &largest,
                                  &c->inputs_[1]);
+  AddBoundaryInputs(icmp_, current_->files_[level + 1], &c->inputs_[1]);
 
   // Get entire range covered by compaction
   InternalKey all_start, all_limit;
@@ -1414,6 +1415,7 @@ void VersionSet::SetupOtherInputs(Compaction* c) {
       std::vector<FileMetaData*> expanded1;
       current_->GetOverlappingInputs(level + 1, &new_start, &new_limit,
                                      &expanded1);
+      AddBoundaryInputs(icmp_, current_->files_[level + 1], &expanded1);
       if (expanded1.size() == c->inputs_[1].size()) {
         Log(options_->info_log,
             "Expanding@%d %d+%d (%ld+%ld bytes) to %d+%d (%ld+%ld bytes)\n",