diff --git a/bip-0174.mediawiki b/bip-0174.mediawiki
index de666221e4..5458a0f26e 100644
--- a/bip-0174.mediawiki
+++ b/bip-0174.mediawiki
@@ -389,7 +389,7 @@ The currently defined per-input types are defined as follows:
 | None
 | No key data
 | <tt><32 byte txid></tt>
-| 32 byte txid of the previous transaction whose output at PSBT_IN_OUTPUT_INDEX is being spent.
+| 32 byte txid in standard byte order, not display byte order, of the previous transaction whose output at PSBT_IN_OUTPUT_INDEX is being spent.
 | 2
 | 0
 | 2
diff --git a/bip-0370.mediawiki b/bip-0370.mediawiki
index 05d4e50773..7ed0ccedd9 100644
--- a/bip-0370.mediawiki
+++ b/bip-0370.mediawiki
@@ -127,7 +127,7 @@ The new per-input types for PSBT Version 2 are defined as follows:
 | None
 | No key data
 | <tt><32 byte txid></tt>
-| 32 byte txid of the previous transaction whose output at PSBT_IN_OUTPUT_INDEX is being spent.
+| 32 byte txid in standard byte order, not display byte order, of the previous transaction whose output at PSBT_IN_OUTPUT_INDEX is being spent.
 | 2
 | 0
 | 2