diff --git a/api/api.proto b/api/api.proto
index 766406364e4..552c9534b28 100644
--- a/api/api.proto
+++ b/api/api.proto
@@ -328,7 +328,7 @@ message Return {
     DUP_TRANSACTION_ERROR = 5;
     TAPOS_ERROR = 6;
     TOO_BIG_TRANSACTION_ERROR = 7;
-    TRANSACTION_EXPIRATION_ERROT = 8;
+    TRANSACTION_EXPIRATION_ERROR = 8;
     OTHER_ERROR = 20;
   }