diff --git a/src/net_processing.cpp b/src/net_processing.cpp
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -4269,7 +4269,7 @@
 
     // Orphan tx
     if (m_orphanage.HaveTx(id)) {
-        return 2;
+        return -2;
     }
 
     // Unknown tx
diff --git a/test/functional/test_framework/messages.py b/test/functional/test_framework/messages.py
--- a/test/functional/test_framework/messages.py
+++ b/test/functional/test_framework/messages.py
@@ -1071,8 +1071,8 @@
 class AvalancheTxVoteError(IntEnum):
     ACCEPTED = 0
     INVALID = 1
-    ORPHAN = 2
     UNKNOWN = -1
+    ORPHAN = -2
 
 
 class AvalancheVote: