diff --git a/include/fmt/core.h b/include/fmt/core.h
index 2e1ae4b6..657ab4f9 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -670,7 +670,7 @@ template <typename T> class buffer {
         size_(sz),
         capacity_(cap) {}
 
-  ~buffer() = default;
+  virtual ~buffer() = default;
 
   /** Sets the buffer data and capacity. */
   void set(T* buf_data, size_t buf_capacity) FMT_NOEXCEPT {