diff --git a/packages/protocol/contracts/L1/provers/GuardianProver.sol b/packages/protocol/contracts/L1/provers/GuardianProver.sol
index 6942a0b557c..74f351cb690 100644
--- a/packages/protocol/contracts/L1/provers/GuardianProver.sol
+++ b/packages/protocol/contracts/L1/provers/GuardianProver.sol
@@ -76,10 +76,6 @@ contract GuardianProver is IVerifier, Guardians {
         nonReentrant
         returns (bool approved_)
     {
-        if (_proof.tier != LibTiers.TIER_GUARDIAN) {
-            revert INVALID_PROOF();
-        }
-
         bytes32 hash = keccak256(abi.encode(_meta, _tran, _proof.data));
         approved_ = approve(_meta.id, hash);
 
diff --git a/packages/protocol/contracts/L1/provers/Guardians.sol b/packages/protocol/contracts/L1/provers/Guardians.sol
index 10e84f1d597..2fa886abbb1 100644
--- a/packages/protocol/contracts/L1/provers/Guardians.sol
+++ b/packages/protocol/contracts/L1/provers/Guardians.sol
@@ -42,7 +42,6 @@ abstract contract Guardians is EssentialContract {
     error INVALID_GUARDIAN();
     error INVALID_GUARDIAN_SET();
     error INVALID_MIN_GUARDIANS();
-    error INVALID_PROOF();
 
     /// @notice Set the set of guardians
     /// @param _newGuardians The new set of guardians