diff --git a/include/fmt/core.h b/include/fmt/core.h
index f8b2c709..2816a64b 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -765,7 +765,7 @@ class iterator_buffer : public Traits, public buffer<T> {
   T data_[buffer_size];
 
  protected:
-  void grow(size_t) final {
+  void grow(size_t) final FMT_OVERRIDE {
     if (this->size() == buffer_size) flush();
   }
   void flush();
@@ -786,7 +786,7 @@ class iterator_buffer : public Traits, public buffer<T> {
 
 template <typename T> class iterator_buffer<T*, T> : public buffer<T> {
  protected:
-  void grow(size_t) final {}
+  void grow(size_t) final FMT_OVERRIDE {}
 
  public:
   explicit iterator_buffer(T* out, size_t = 0) : buffer<T>(out, 0, ~size_t()) {}
@@ -804,7 +804,7 @@ class iterator_buffer<std::back_insert_iterator<Container>,
   Container& container_;
 
  protected:
-  void grow(size_t capacity) final {
+  void grow(size_t capacity) final FMT_OVERRIDE {
     container_.resize(capacity);
     this->set(&container_[0], capacity);
   }
@@ -827,7 +827,7 @@ template <typename T = char> class counting_buffer : public buffer<T> {
   size_t count_ = 0;
 
  protected:
-  void grow(size_t) final {
+  void grow(size_t) final FMT_OVERRIDE {
     if (this->size() != buffer_size) return;
     count_ += this->size();
     this->clear();
diff --git a/include/fmt/format.h b/include/fmt/format.h
index 93e4b1e6..a0c8045e 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -622,7 +622,7 @@ class basic_memory_buffer : public detail::buffer<T> {
   }
 
  protected:
-  void grow(size_t size) final;
+  void grow(size_t size) final FMT_OVERRIDE;
 
  public:
   using value_type = T;