diff --git a/app/src/auto_validator/core/utils/decorators.py b/app/src/auto_validator/core/utils/decorators.py
index 9d99ff7..af012a1 100644
--- a/app/src/auto_validator/core/utils/decorators.py
+++ b/app/src/auto_validator/core/utils/decorators.py
@@ -23,7 +23,7 @@ def _wrapped_view(view, *args, **kwargs):
             nonce_float = float(nonce)
 
             current_time = time.time()
-            if abs(current_time - nonce_float) > settings.SIGNATURE_VALID_DURATION:
+            if abs(current_time - nonce_float) > int(settings.SIGNATURE_EXPIRE_DURATION):
                 raise AuthenticationFailed("Invalid nonce")
 
             if not hotkey: