diff --git a/duniterpy/key/ascii_armor.py b/duniterpy/key/ascii_armor.py
index e937687bfdf7376885ae065de84e4324dcb9bec4..db031dbde31fc4f6bf5b4c9c6a0c5f6547a4d88d 100644
--- a/duniterpy/key/ascii_armor.py
+++ b/duniterpy/key/ascii_armor.py
@@ -20,7 +20,9 @@ from typing import Any, Dict, List, Optional
 import libnacl
 from libnacl.version import version as libnacl_version
 
-from duniterpy.key import PublicKey, SigningKey, VerifyingKey
+from .encryption_key import PublicKey
+from .signing_key import SigningKey
+from .verifying_key import VerifyingKey
 
 # Headers constants
 BEGIN_MESSAGE_HEADER = "-----BEGIN DUNITER MESSAGE-----"