diff --git a/include/dwarfs/writer/internal/fragment_chunkable.h b/include/dwarfs/writer/internal/fragment_chunkable.h
index 2e662cfb..2fcb1c7b 100644
--- a/include/dwarfs/writer/internal/fragment_chunkable.h
+++ b/include/dwarfs/writer/internal/fragment_chunkable.h
@@ -43,7 +43,7 @@ class fragment_chunkable : public chunkable {
   fragment_chunkable(inode const& ino, single_inode_fragment& frag,
                      file_off_t offset, mmif& mm,
                      categorizer_manager const* catmgr);
-  ~fragment_chunkable();
+  ~fragment_chunkable() override;
 
   file const* get_file() const override;
   size_t size() const override;
diff --git a/include/dwarfs/writer/rule_based_entry_filter.h b/include/dwarfs/writer/rule_based_entry_filter.h
index 7b686c46..d3aa223f 100644
--- a/include/dwarfs/writer/rule_based_entry_filter.h
+++ b/include/dwarfs/writer/rule_based_entry_filter.h
@@ -39,7 +39,7 @@ namespace writer {
 class rule_based_entry_filter : public entry_filter {
  public:
   rule_based_entry_filter(logger& lgr, std::shared_ptr<file_access const> fa);
-  ~rule_based_entry_filter();
+  ~rule_based_entry_filter() override;
 
   void set_root_path(std::filesystem::path const& path) {
     impl_->set_root_path(path);