diff --git a/bip-0138.md b/bip-0138.md
index 9affdfb7..555bb3de 100644
--- a/bip-0138.md
+++ b/bip-0138.md
@@ -481,7 +481,8 @@ If optional boolean `archived` is `true`, importing wallets SHOULD NOT use the
 descriptor set for new address generation.
 
 `range` is an optional two-element array `[start, end]`, inclusive, describing
-the ranged derivation indexes covered by the descriptor set.
+the [BIP32](bip-0032.mediawiki) non-hardened child indexes covered by the
+descriptor set, with `start <= end`.
 
 `birth_time` is an optional integer Unix timestamp in seconds, indicating a
 lower bound for when the descriptor set may have received funds. Importing
@@ -521,8 +522,9 @@ optional metadata fields:
 If optional boolean `archived` is `true`, importing wallets SHOULD NOT use the
 policy for new address generation.
 
-`range` is an optional two-element array `[start, end]`, inclusive, describing the
-ranged derivation indexes covered by the policy.
+`range` is an optional two-element array `[start, end]`, inclusive, describing
+the [BIP32](bip-0032.mediawiki) non-hardened child indexes covered by the
+policy, with `start <= end`.
 
 `birth_time` is an optional integer Unix timestamp in seconds, indicating a lower
 bound for when the policy may have received funds. Importing wallets MAY use this