diff --git a/contracts/sfc/SFCBase.sol b/contracts/sfc/SFCBase.sol
index 4c46db0..75016da 100644
--- a/contracts/sfc/SFCBase.sol
+++ b/contracts/sfc/SFCBase.sol
@@ -31,6 +31,7 @@ contract SFCBase is SFCState {
     error TooManyPubkeyUpdates();
 
     // redirections
+    error AlreadyRedirected();
     error SameRedirectionAuthorizer();
     error Redirected();
 
@@ -42,7 +43,6 @@ contract SFCBase is SFCState {
     error WrongValidatorStatus();
 
     // requests
-    error AlreadyRedirected();
     error RequestExists();
     error RequestNotExists();