diff --git a/src/main/kotlin/xyz/alexcrea/group/EnchantConflictManager.kt b/src/main/kotlin/xyz/alexcrea/group/EnchantConflictManager.kt
index 669ba0e..fea9239 100644
--- a/src/main/kotlin/xyz/alexcrea/group/EnchantConflictManager.kt
+++ b/src/main/kotlin/xyz/alexcrea/group/EnchantConflictManager.kt
@@ -17,6 +17,9 @@ class EnchantConflictManager {
         private const val CONFLICT_GROUP_PATH = "notAffectedGroups"
         // Path for the maximum number of enchantment before validating the conflict
         private const val ENCH_MAX_PATH = "maxEnchantmentBeforeConflict"
+        // Path for a flag: if the enchantment will be used in the last supported version
+        // TODO maybe replace this system by a list of "future" enchantment.
+        private const val FUTURE_USE_PATH = "useInFuture"
         // Default name for an empty Material group
         private val DEFAULT_EMPTY_GROUP = IncludeGroup("empty")
         // Default name for a joining group
@@ -33,8 +36,9 @@ class EnchantConflictManager {
         for (key in keys) {
             val section = config.getConfigurationSection(key)!!
             val conflict = createConflict(section,itemManager,key)
-
-            conflictList.add(conflict)
+            if(conflict != null){
+                conflictList.add(conflict)
+            }
         }
 
     }
@@ -42,8 +46,9 @@ class EnchantConflictManager {
     // create and read a conflict from a yaml section
     private fun createConflict(section: ConfigurationSection,
                                itemManager: ItemGroupManager,
-                               conflictName: String): EnchantConflictGroup {
-
+                               conflictName: String): EnchantConflictGroup? {
+        // Is it planed for the future
+        val futureUse = section.getBoolean(FUTURE_USE_PATH,false)
         // Create conflict
         val conflict = createConflictObject(section,itemManager,conflictName)
         // Read and add enchantment to conflict
@@ -52,13 +57,18 @@ class EnchantConflictManager {
             val enchantKey = NamespacedKey.minecraft(enchantName)
             val enchant = Enchantment.getByKey(enchantKey)
             if(enchant == null){
-                UnsafeEnchants.instance.logger.warning("Enchantment $enchantName do not exist but was asked for conflict $conflictName")
+                if(!futureUse){
+                    UnsafeEnchants.instance.logger.warning("Enchantment $enchantName do not exist but was asked for conflict $conflictName")
+                }
                 continue
             }
             conflict.addEnchantment(enchant)
         }
         if(conflict.isEnchantEmpty()){
-            UnsafeEnchants.instance.logger.warning("Conflict $conflictName do not have valid enchantment, it will not work")
+            if(!futureUse){
+                UnsafeEnchants.instance.logger.warning("Conflict $conflictName do not have valid enchantment, it will not work")
+            }
+            return null
         }
 
         return conflict
diff --git a/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt b/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt
index c901721..9173582 100644
--- a/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt
+++ b/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt
@@ -16,6 +16,8 @@ class ItemGroupManager {
         private const val MATERIAL_LIST_PATH = "items"
         // Path for included groups list
         private const val GROUP_LIST_PATH = "groups"
+        // Temporary list of elements in default config that are use in future
+        private val FUTURE_MATERIAL = setOf("PIGLIN_HEAD","BRUSH")
     }
 
     private lateinit var groupMap : HashMap<String,MaterialGroup>
@@ -66,8 +68,12 @@ class ItemGroupManager {
             val materialName = materialTemp.uppercase(Locale.getDefault())
             val material = Material.getMaterial(materialName)
             if(material == null){
-                UnsafeEnchants.instance.logger.warning(
-                    "Unknown material $materialTemp on group ${group.getName()}")
+                // Check if we should warn the user
+                if(materialName !in FUTURE_MATERIAL){
+                    UnsafeEnchants.instance.logger.warning(
+                        "Unknown material $materialTemp on group ${group.getName()}")
+
+                }
                 continue
             }
             group.addToPolicy(material)
diff --git a/src/main/resources/enchant_conflict.yml b/src/main/resources/enchant_conflict.yml
index 33ac631..fe91fd5 100644
--- a/src/main/resources/enchant_conflict.yml
+++ b/src/main/resources/enchant_conflict.yml
@@ -145,8 +145,10 @@ restriction_sweeping:
   enchantments: [sweeping]
   notAffectedGroups: [swords]
 
-# Do not exist in 1.18 but future proof
+# Do not exist in 1.18, that mean useInFuture will be set to true
+# useInFuture set to true also mean it will not warn if there is an issue
 restriction_swift_sneak:
+  useInFuture: true
   enchantments: [swift_sneak]
   notAffectedGroups: [boots]