diff --git a/docs/firmware-design.md b/docs/firmware-design.md
index 523fa55c1..45e56e69b 100644
--- a/docs/firmware-design.md
+++ b/docs/firmware-design.md
@@ -1752,7 +1752,7 @@ The ToC header has the following fields:
     `name`: The name of the ToC. This is currently used to validate the header.
     `serial_number`: A non-zero number provided by the creation tool
     `flags`: Flags associated with this data.
-        Bits 0-13: Reserved
+        Bits 0-31: Reserved
         Bits 32-47: Platform defined
         Bits 48-63: Reserved