diff --git a/FAQ.md b/FAQ.md
index cc2c3e1..cb5aaa2 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -5,6 +5,7 @@
   * [Why does my device crash or reboot?](#why-does-my-device-crash-or-reboot)
   * [What are the differences between `StaticJsonBuffer` and `DynamicJsonBuffer`?](#what-are-the-differences-between-staticjsonbuffer-and-dynamicjsonbuffer)
   * [How to determine the buffer size?](#how-to-determine-the-buffer-size)
+  * [What are the common sizes for JsonBuffer?](#what-are-the-common-sizes-for-jsonbuffer)
   * [I found a memory leak in the library!](#i-found-a-memory-leak-in-the-library)
   * [How to reuse a `JsonBuffer`?](#how-to-reuse-a-jsonbuffer)
   * [What's the best way to use the library?](#whats-the-best-way-to-use-the-library)