diff --git a/lib/tasks/llm/llms/openai_s2s.js b/lib/tasks/llm/llms/openai_s2s.js
index 2108a71b..a98376ad 100644
--- a/lib/tasks/llm/llms/openai_s2s.js
+++ b/lib/tasks/llm/llms/openai_s2s.js
@@ -120,7 +120,7 @@ class TaskLlmOpenAI_S2S extends Task {
 
     switch (this.vendor) {
       case 'openai':
-        return 'v1/realtime?model=${this.model}';
+        return `v1/realtime?model=${this.model}`;
       case 'microsoft':
         return `openai/realtime?api-version=2024-10-01-preview&deployment=${this.model}`;
     }