diff --git a/Source/Framework/Constants/AchievementConst.cs b/Source/Framework/Constants/AchievementConst.cs
index a2c302021..0c6440425 100644
--- a/Source/Framework/Constants/AchievementConst.cs
+++ b/Source/Framework/Constants/AchievementConst.cs
@@ -291,7 +291,7 @@ namespace Framework.Constants
         //Unk185                     = 185, // Nyi
         //Unk186                     = 186, // Nyi
         GarrisonFollowerType = 187, // Nyi
-        //Unk188                     = 188, // Nyi
+        UsedLevelBoostLessThanTwoHoursAgo = 188, // Nyi
         //Unk189                     = 189, // Nyi
         //Unk190                     = 190, // Nyi
         //Unk191                     = 191, // Nyi
diff --git a/Source/Game/Achievements/CriteriaHandler.cs b/Source/Game/Achievements/CriteriaHandler.cs
index 3b8e72079..b0213df1f 100644
--- a/Source/Game/Achievements/CriteriaHandler.cs
+++ b/Source/Game/Achievements/CriteriaHandler.cs
@@ -2221,6 +2221,8 @@ namespace Game.Achievements
                             return false;
                         break;
                     }
+                case CriteriaAdditionalCondition.UsedLevelBoostLessThanTwoHoursAgo: // 188
+                    return false;
                 case CriteriaAdditionalCondition.HonorLevel: // 193
                     if (referencePlayer.GetHonorLevel() != reqValue)
                         return false;