diff --git a/bigbluebutton/django/views.py b/bigbluebutton/django/views.py
index 010879f5d68290d2cdea7aef0b3cceeddfdbda6e..fb0700bf079a7a56e211c1f680290df91e768240 100644
--- a/bigbluebutton/django/views.py
+++ b/bigbluebutton/django/views.py
@@ -64,7 +64,7 @@ class APIView(View):
             return self._success("", res)
         except TypeError:
             return self._error(
-                404, "xInfraBlueUnknownAPICall", "The API call {method} is not known"
+                404, "xInfraBlueUnknownAPICall", f"The API call {method} is not known"
             )
 
     def _xml_response(