diff --git a/_includes/devdoc/ref_block_chain.md b/_includes/devdoc/ref_block_chain.md
index f450e947..9e556c63 100644
--- a/_includes/devdoc/ref_block_chain.md
+++ b/_includes/devdoc/ref_block_chain.md
@@ -218,7 +218,7 @@ of blocks in regtest mode.
{% autocrossref %}
Under current consensus rules, a block is not valid unless its
-serialized size is less than or equal to 1 MB. All fields described
+serialized size is less than or equal to 2 MB. All fields described
below are counted towards the serialized size.
| Bytes | Name | Data Type | Description
diff --git a/_includes/templates/index.html b/_includes/templates/index.html
index 65a7cee5..f8eef414 100644
--- a/_includes/templates/index.html
+++ b/_includes/templates/index.html
@@ -64,8 +64,8 @@ http://opensource.org/licenses/MIT.