diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index 0beb6ca9f..ecf0434a8 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -178,8 +178,9 @@ Code snippets appearing in `this style` are to be interpreted as Python code.
 
 ## Constants
 
-Note: the default main-net values for the constants are included here for illustrative purposes.
-The different configurations for main-net, test-nets, and yaml-based testing can be found in the `configs/contants/` directory.
+Note: the default mainnet values for the constants are included here for spec-design purposes.
+The different configurations for mainnet, testnets, and yaml-based testing can be found in the `configs/constant_presets/` directory.
+These configurations are updated for releases, but may be out of sync during `dev` changes.
 
 ### Misc