diff --git a/public/scripts/PromptManager.js b/public/scripts/PromptManager.js
index 30801532..cbf3eed3 100644
--- a/public/scripts/PromptManager.js
+++ b/public/scripts/PromptManager.js
@@ -1286,7 +1286,7 @@ class PromptManager {
             } else if (!entry.enabled && entry.identifier === 'main') {
                 // Some extensions require main prompt to be present for relative inserts.
                 // So we make a GMO-free vegan replacement.
-                const prompt = this.getPromptById(entry.identifier);
+                const prompt = structuredClone(this.getPromptById(entry.identifier));
                 prompt.content = '';
                 if (prompt) promptCollection.add(this.preparePrompt(prompt));
             }