diff --git a/docs/contents/libraries.rst b/docs/contents/libraries.rst
index ca3c24e..b7b29de 100644
--- a/docs/contents/libraries.rst
+++ b/docs/contents/libraries.rst
@@ -34,7 +34,7 @@ All sections are **lower case** and separated by an **underscore**. The sections
   +--------------------------------+---------------------------------------+
   | Digital Standard Cells         | :lib_type:`sc`                        |
   +--------------------------------+---------------------------------------+
-  | Build Space (Flash, SRAM, etc) | :lib_type:`sp`                        |
+  | Build Space (Flash, SRAM, etc) | :lib_type:`bd`                        |
   +--------------------------------+---------------------------------------+
   | IO and Periphery               | :lib_type:`io`                        |
   +--------------------------------+---------------------------------------+