diff --git a/ui/media/js/main.js b/ui/media/js/main.js
index 5c7cbe99..fac388d8 100644
--- a/ui/media/js/main.js
+++ b/ui/media/js/main.js
@@ -1345,7 +1345,7 @@ function setEmbeddings(task) {
     let prompt = task.reqBody.prompt
     let negativePrompt = task.reqBody.negative_prompt
     let overallPrompt = (prompt + " " + negativePrompt).toLowerCase()
-    overallPrompt = overallPrompt.replaceAll(/[^a-z0-9\-\.]/g, " ") // only allow alpha-numeric, dots and hyphens
+    overallPrompt = overallPrompt.replaceAll(/[^a-z0-9\-_\.]/g, " ") // only allow alpha-numeric, dots and hyphens
     overallPrompt = overallPrompt.split(" ")
 
     let embeddingsTree = modelsOptions["embeddings"]