diff --git a/ortools/algorithms/set_cover_solve.cc b/ortools/algorithms/set_cover_solve.cc
index ab1cda7b7b..95b139a116 100644
--- a/ortools/algorithms/set_cover_solve.cc
+++ b/ortools/algorithms/set_cover_solve.cc
@@ -142,8 +142,7 @@ FileFormat ParseFileFormat(const std::string& format_name) {
   }
 }
 
-SetCoverModel ReadModel(const std::string& input_file,
-                        FileFormat input_format) {
+SetCoverModel ReadModel(absl::string_view input_file, FileFormat input_format) {
   switch (input_format) {
     case FileFormat::ORLIB_SCP:
       return ReadOrlibScp(input_file);
diff --git a/ortools/util/fixed_shape_binary_tree.h b/ortools/util/fixed_shape_binary_tree.h
index 17008245c5..86a5587e5a 100644
--- a/ortools/util/fixed_shape_binary_tree.h
+++ b/ortools/util/fixed_shape_binary_tree.h
@@ -218,7 +218,6 @@ class FixedShapeBinaryTree {
   template <typename TypeWithPushBack>
   void PartitionIntervalIntoNodes(LeafIndex first_leaf, LeafIndex last_leaf,
                                   TypeWithPushBack* result) const {
-    DCHECK_LE(first_leaf, last_leaf);
     TreeNodeIndex prev(0);
     TreeNodeIndex current = GetNodeStartOfRange(first_leaf, last_leaf);
     if (current == Root()) {