diff --git a/tests/core/PoolConfigurator.reserveRiskConfig.t.sol b/tests/core/PoolConfigurator.reserveRiskConfig.t.sol
index cd6a28b7..ddc81a46 100644
--- a/tests/core/PoolConfigurator.reserveRiskConfig.t.sol
+++ b/tests/core/PoolConfigurator.reserveRiskConfig.t.sol
@@ -735,7 +735,7 @@ contract PoolConfiguratorReserveRiskConfigs is TestnetProcedures {
 
   function test_setLiquidationGracePeriodReserve(uint40 gracePeriod) public {
     vm.assume(
-      gracePeriod <= contracts.poolConfiguratorProxy.MAX_GRACE_PERIOD() && gracePeriod != 0
+      gracePeriod < contracts.poolConfiguratorProxy.MAX_GRACE_PERIOD() && gracePeriod != 0
     );
 
     address asset = tokenList.usdx;