diff --git a/bip-xxxx.mediawiki b/bip-xxxx.mediawiki
index c325e98f..30fda119 100644
--- a/bip-xxxx.mediawiki
+++ b/bip-xxxx.mediawiki
@@ -155,7 +155,7 @@ However, it is important that error codes that are not well-known and that the m
 Such error codes or messages could be used maliciously to phish a non technical user.
 Instead those errors or messages can only appear in debug logs.
 
-It is advised to hard code the description of the wellknown error codes into the sender's software.
+It is advised to hard code the description of the well known error codes into the sender's software.
 
 ===Receiver's original PSBT checklist===