diff --git a/packages/contracts-bedrock/test/L1/SystemConfig.t.sol b/packages/contracts-bedrock/test/L1/SystemConfig.t.sol
index 9a2fac9c1d0..0813d0512ec 100644
--- a/packages/contracts-bedrock/test/L1/SystemConfig.t.sol
+++ b/packages/contracts-bedrock/test/L1/SystemConfig.t.sol
@@ -867,15 +867,17 @@ contract SystemConfig_IsFeatureEnabled_Test is SystemConfig_TestInit {
     /// @notice Tests that `isFeatureEnabled` returns false for unset features.
     /// @param _feature The feature to check.
     function testFuzz_isFeatureEnabled_unsetFeature_succeeds(bytes32 _feature) external {
-        vm.startPrank(address(systemConfig.proxyAdmin()));
+        if (_feature == Features.ETH_LOCKBOX && systemConfig.isFeatureEnabled(Features.ETH_LOCKBOX)) {
+            // Needs to be anything but ETH_LOCKBOX because we can't turn that feature off if it's on.
+            vm.skip(true);
+        }
 
         // Normalize CUSTOM_GAS_TOKEN to avoid environment-dependent state
         if (systemConfig.isFeatureEnabled(Features.CUSTOM_GAS_TOKEN)) {
+            vm.prank(address(systemConfig.proxyAdmin()));
             systemConfig.setFeature(Features.CUSTOM_GAS_TOKEN, false);
         }
 
-        vm.stopPrank();
-
         assertFalse(systemConfig.isFeatureEnabled(_feature));
     }