diff --git a/banque.md b/banque.md
index 4afd54a..1505e1f 100644
--- a/banque.md
+++ b/banque.md
@@ -377,7 +377,7 @@ erDiagram
   operation {
     bigint id PK
     bigint transaction_id FK
-    text account FK
+    bigint account_id FK
     decimal amount
     text direction
   }