diff --git a/src/runtime/buffer.h b/src/runtime/buffer.h
index 926018d19334..c3d4ecb72ebf 100644
--- a/src/runtime/buffer.h
+++ b/src/runtime/buffer.h
@@ -27,7 +27,7 @@ class buffer {
 
     void free_memory() {
         if (m_buffer != reinterpret_cast<T*>(m_initial_buffer))
-            #if __cplusplus >= 201402L
+            #if __cpp_sized_deallocation >= 201309L
                 operator delete[](reinterpret_cast<char*>(m_buffer), sizeof(T) * m_capacity);
             #else
                 delete[] reinterpret_cast<char*>(m_buffer);