diff --git a/server.py b/server.py
index 57d5a65df..e5c4c9107 100644
--- a/server.py
+++ b/server.py
@@ -447,7 +447,7 @@ class PromptServer():
             resp_code = 200
             out_string = ""
             json_data =  await request.json()
-            json_data = self.trigger_on_prompt(json_data)
+            json_data =  await self.trigger_on_prompt(json_data)
 
             if "number" in json_data:
                 number = float(json_data['number'])