diff --git a/rfc/0011_Duniter_Blockchain_Protocol_V13.md b/rfc/0011_Duniter_Blockchain_Protocol_V13.md
index 2af17d3ed7f218da0edcfa306f65ac839e8f9656..fab30f3c328e856c1fbe34e3e1943a239f6c85ca 100644
--- a/rfc/0011_Duniter_Blockchain_Protocol_V13.md
+++ b/rfc/0011_Duniter_Blockchain_Protocol_V13.md
@@ -2348,7 +2348,7 @@ Else:
     ENTRY.isReplayable = false
 
 EndIf
-    
+
 ####### BR_G45 - ENTRY.sigOK
 
     ENTRY.sigOK = SIG_CHECK_CERT(REDUCE(GLOBAL_IINDEX[pub=ENTRY.receiver]), ENTRY)
@@ -2359,20 +2359,20 @@ EndIf
 
 For each ENTRY in local SINDEX where `op = 'UPDATE'`:
 
-    REF_BLOCK = HEAD~<HEAD~1.number + 1 - NUMBER(ENTRY.hash)>[hash=HASH(ENTRY.created_on)]
-    
+    REF_BLOCK = HEAD~<HEAD~1.number + 1 - NUMBER(ENTRY.created_on)>
+
 If `HEAD.number == 0 && ENTRY.created_on == '0-E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855'`:
-    
+
     ENTRY.age = 0
-    
-Else if `REF_BLOC != null`:
+
+Else if `REF_BLOCK != null`:
 
     ENTRY.age = HEAD~1.medianTime - REF_BLOCK.medianTime
-    
+
 Else:
 
     ENTRY.age = conf.txWindow + 1
-    
+
 EndIf
 
 ####### BR_G46 - ENTRY.available and ENTRY.conditions
@@ -2395,7 +2395,7 @@ For each `LOCAL_SINDEX[op='UPDATE'] as ENTRY`:
     EndIf
     INPUT = REDUCE(INPUT_ENTRIES)
     ENTRY.isLocked = TX_SOURCE_UNLOCK(INPUT.conditions, ENTRY)
-    
+
 ####### BR_G48 - ENTRY.isTimeLocked
 
     INPUT_ENTRIES = LOCAL_SINDEX[op='CREATE',identifier=ENTRY.identifier,pos=ENTRY.pos,amount=ENTRY.amount,base=ENTRY.base]