diff --git a/contracts/utils/cryptography/SignatureChecker.sol b/contracts/utils/cryptography/SignatureChecker.sol
index 4290c57ddf1..036be785eb4 100644
--- a/contracts/utils/cryptography/SignatureChecker.sol
+++ b/contracts/utils/cryptography/SignatureChecker.sol
@@ -83,7 +83,7 @@ library SignatureChecker {
             mcopy(add(ptr, 0x44), signature, add(length, 0x20))
 
             let success := staticcall(gas(), signer, ptr, add(length, 0x64), 0x00, 0x20)
-            result := and(success, and(gt(returndatasize(), 0x19), eq(mload(0x00), selector)))
+            result := and(success, and(gt(returndatasize(), 0x1f), eq(mload(0x00), selector)))
         }
     }