diff --git a/src/systems/generation/promptBuilder.js b/src/systems/generation/promptBuilder.js
index 74b8080..abc3b3e 100644
--- a/src/systems/generation/promptBuilder.js
+++ b/src/systems/generation/promptBuilder.js
@@ -1188,8 +1188,7 @@ export async function generateSeparateUpdatePrompt() {
                     continue;
                 }
             }
-            // For assistant_message_end, extra_user_message, extra_assistant_message:
-            // Inject into the assistant message itself
+            // For assistant_message_end: inject into the assistant message itself
 
             // Append to existing or create new entry
             if (contextInjectionMap.has(targetIdx)) {
diff --git a/src/systems/ui/trackerEditor.js b/src/systems/ui/trackerEditor.js
index 2ebe29b..e224765 100644
--- a/src/systems/ui/trackerEditor.js
+++ b/src/systems/ui/trackerEditor.js
@@ -1400,8 +1400,6 @@ function renderHistoryPersistenceTab() {
     html += `<select id="rpg-history-injection-position" class="rpg-select" style="margin-left: 8px;">`;
     html += `<option value="user_message_end" ${historyPersistence.injectionPosition === 'user_message_end' ? 'selected' : ''}>End of User Message</option>`;
     html += `<option value="assistant_message_end" ${historyPersistence.injectionPosition === 'assistant_message_end' ? 'selected' : ''}>End of Assistant Message</option>`;
-    html += `<option value="extra_user_message" ${historyPersistence.injectionPosition === 'extra_user_message' ? 'selected' : ''}>Extra User Message</option>`;
-    html += `<option value="extra_assistant_message" ${historyPersistence.injectionPosition === 'extra_assistant_message' ? 'selected' : ''}>Extra Assistant Message</option>`;
     html += `</select>`;
     html += '</div>';