diff --git a/PlayerTags/Data/DefaultPluginData.cs b/PlayerTags/Data/DefaultPluginData.cs
index e7365ba..84bf440 100644
--- a/PlayerTags/Data/DefaultPluginData.cs
+++ b/PlayerTags/Data/DefaultPluginData.cs
@@ -151,6 +151,7 @@ namespace PlayerTags.Data
                 TagTargetInNameplates = NameplateElement.Title,
                 
                 TargetChatTypes = new List<XivChatType>(Enum.GetValues<XivChatType>()),
+                TargetChatTypesIncludeUndefined = true,
             };
 
             AllRoleTags = new Tag()
@@ -258,6 +259,7 @@ namespace PlayerTags.Data
                 IsVisibleForOtherPlayers = true,
 
                 TargetChatTypes = new List<XivChatType>(Enum.GetValues<XivChatType>()),
+                TargetChatTypesIncludeUndefined = true,
             };
 
             AllRoleTags = new Tag()
@@ -372,6 +374,7 @@ namespace PlayerTags.Data
                 IsVisibleForOtherPlayers = true,
 
                 TargetChatTypes = new List<XivChatType>(Enum.GetValues<XivChatType>()),
+                TargetChatTypesIncludeUndefined = true,
             };
 
             AllRoleTags = new Tag()
diff --git a/PlayerTags/Data/Tag.cs b/PlayerTags/Data/Tag.cs
index 1ff6dfa..1244c1c 100644
--- a/PlayerTags/Data/Tag.cs
+++ b/PlayerTags/Data/Tag.cs
@@ -189,6 +189,8 @@ namespace PlayerTags.Data
 
         [InheritableCategory("ChatFeatureCategory")]
         public InheritableReference<List<XivChatType>> TargetChatTypes = new(new List<XivChatType>(Enum.GetValues<XivChatType>()));
+        [InheritableCategory("ChatFeatureCategory")]
+        public InheritableValue<bool> TargetChatTypesIncludeUndefined = new(true);
 
         [JsonIgnore]
         public string[] IdentitiesToAddTo
diff --git a/PlayerTags/Features/ChatTagTargetFeature.cs b/PlayerTags/Features/ChatTagTargetFeature.cs
index c6e4eb1..fe11e31 100644
--- a/PlayerTags/Features/ChatTagTargetFeature.cs
+++ b/PlayerTags/Features/ChatTagTargetFeature.cs
@@ -341,7 +341,8 @@ namespace PlayerTags.Features
                 StringChanges stringChanges = new();
 
                 bool isTagEnabled(Tag tag)
-                    => tag.TagPositionInChat.InheritedValue != null && tag.TargetChatTypes.InheritedValue != null && tag.TargetChatTypes.InheritedValue.Contains(chatType);
+                    => tag.TagPositionInChat.InheritedValue != null && tag.TargetChatTypes.InheritedValue != null &&
+                    (tag.TargetChatTypes.InheritedValue.Contains(chatType) || (!Enum.IsDefined(chatType) && (tag.TargetChatTypesIncludeUndefined?.InheritedValue ?? false)));
 
                 if (stringMatch.GameObject is PlayerCharacter playerCharacter)
                 {
diff --git a/PlayerTags/Resources/Strings.Designer.cs b/PlayerTags/Resources/Strings.Designer.cs
index 86a721c..d14322a 100644
--- a/PlayerTags/Resources/Strings.Designer.cs
+++ b/PlayerTags/Resources/Strings.Designer.cs
@@ -2075,6 +2075,25 @@ namespace PlayerTags.Resources {
             }
         }
         
+        /// <summary>
+        ///   Sucht eine lokalisierte Zeichenfolge, die Include undefined Chat Types ähnelt.
+        /// </summary>
+        public static string Loc_TargetChatTypesIncludeUndefined {
+            get {
+                return ResourceManager.GetString("Loc_TargetChatTypesIncludeUndefined", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Sucht eine lokalisierte Zeichenfolge, die When enabled the Tag will apply to all Chat messages that has not a defined type.
+        ///This case can happen either if the Game updates and the Enumeration of all Chat Types gets invalid due to shifted values, or plugins creates a custom chat type for whatever reason. ähnelt.
+        /// </summary>
+        public static string Loc_TargetChatTypesIncludeUndefined_Description {
+            get {
+                return ResourceManager.GetString("Loc_TargetChatTypesIncludeUndefined_Description", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Sucht eine lokalisierte Zeichenfolge, die Text ähnelt.
         /// </summary>
diff --git a/PlayerTags/Resources/Strings.de.resx b/PlayerTags/Resources/Strings.de.resx
index c5fa5fa..da21b3e 100644
--- a/PlayerTags/Resources/Strings.de.resx
+++ b/PlayerTags/Resources/Strings.de.resx
@@ -822,4 +822,11 @@ Benutze dies, wenn du jede Option unter deiner Kontrolle haben möchtest oder nu
   <data name="Loc_IsRoleIconVisibleInChat" xml:space="preserve">
     <value>Rollensymbol im Chat anzeigen</value>
   </data>
+  <data name="Loc_TargetChatTypesIncludeUndefined" xml:space="preserve">
+    <value>Undefinierte Chattypen einbeziehen</value>
+  </data>
+  <data name="Loc_TargetChatTypesIncludeUndefined_Description" xml:space="preserve">
+    <value>Wenn aktiviert, gilt das Tag für alle Chat-Nachrichten, die keinen definierten Typ haben.
+Dieser Fall kann entweder auftreten, wenn das Spiel ein Update bekommt und die Aufzählung aller Chat-Typen aufgrund von geänderten Werten ungültig sind oder Plugins erstellt einen benutzerdefinierten Chat-Typ, aus welchen Gründen auch immer.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/PlayerTags/Resources/Strings.resx b/PlayerTags/Resources/Strings.resx
index a100308..0850b13 100644
--- a/PlayerTags/Resources/Strings.resx
+++ b/PlayerTags/Resources/Strings.resx
@@ -822,4 +822,11 @@ Use this if you want to to have every option under your control or just want to
   <data name="Loc_IsRoleIconVisibleInChat" xml:space="preserve">
     <value>Show role icon in Chat</value>
   </data>
+  <data name="Loc_TargetChatTypesIncludeUndefined" xml:space="preserve">
+    <value>Include undefined Chat Types</value>
+  </data>
+  <data name="Loc_TargetChatTypesIncludeUndefined_Description" xml:space="preserve">
+    <value>When enabled the Tag will apply to all Chat messages that has not a defined type.
+This case can happen either if the Game updates and the Enumeration of all Chat Types gets invalid due to shifted values, or plugins creates a custom chat type for whatever reason.</value>
+  </data>
 </root>
\ No newline at end of file