diff --git a/contracts/test/foundry/FleekERC721/ENS.t.sol b/contracts/test/foundry/FleekERC721/ENS.t.sol
index 280d929..2d0d625 100644
--- a/contracts/test/foundry/FleekERC721/ENS.t.sol
+++ b/contracts/test/foundry/FleekERC721/ENS.t.sol
@@ -16,6 +16,7 @@ contract Test_FleekERC721_ENS is Test_FleekERC721_Base {
 
     function testFuzz_cannotMintIfNotENSOwner(address account) public {
         vm.assume(deployer != account);
+        vm.assume(account != address(0));
         vm.prank(account);
         expectRevertWithMustBeENSOwner();
         mintDefault(account);
@@ -23,6 +24,7 @@ contract Test_FleekERC721_ENS is Test_FleekERC721_Base {
 
     function testFuzz_cannotSetTokenENSIfNotENSOwner(address account) public {
         vm.assume(deployer != account);
+        vm.assume(account != address(0));
         mintDefault(account);
 
         vm.prank(account);