diff --git a/app/models/ansible_models.py b/app/models/ansible_models.py
index 63adc05e..5c1e8647 100644
--- a/app/models/ansible_models.py
+++ b/app/models/ansible_models.py
@@ -10,6 +10,7 @@ class AnsibleInstallNginx(BaseModel):
     
     @validator("os")
     def validator_os(cls, value):
-        if value not in ['ubuntu']:
-            raise ValueError("Size must be a valid string ending with 'Gi', 'Mi', or 'Ti'.")
+        valid_oss = ['ubuntu']
+        if value not in valid_oss:
+            raise ValueError(f"your selected OS must be in {valid_oss}")
         return value
\ No newline at end of file
diff --git a/app/routes/ansible.py b/app/routes/ansible.py
index 44816fcf..4c985c83 100644
--- a/app/routes/ansible.py
+++ b/app/routes/ansible.py
@@ -7,6 +7,7 @@
 
 @app.post("/ansible-install/nginx/")
 async def ansible_install_generation_nginx(request:AnsibleInstallNginx) -> Output:
+    
         if os.environ.get("TEST"):
             return Output(output='output')
         generated_prompt = ansible_install_template(request,"nginx")