diff --git a/spec.bs b/spec.bs
index af18224..9b4e6f9 100644
--- a/spec.bs
+++ b/spec.bs
@@ -624,8 +624,8 @@ members:
     :  <dfn>timeout</dfn> member
     :: The number of milliseconds before the request to sign the transaction
         details times out. At most 1 hour. Default values and the range of
-	allowed values is defined by the user agent. Web Authentication
-	provides [webauthn-3#sctn-createCredential|additional timeout guidance].
+        allowed values is defined by the user agent. Web Authentication
+        provides [webauthn-3#sctn-createCredential|additional timeout guidance].
 
     :  <dfn>payeeName</dfn> member
     :: The display name of the payee that this SPC call is for (e.g., the