diff --git a/src/py/flwr/client/app.py b/src/py/flwr/client/app.py
index ac20329927aa..1720405ab867 100644
--- a/src/py/flwr/client/app.py
+++ b/src/py/flwr/client/app.py
@@ -511,7 +511,7 @@ def _load_client_app() -> ClientApp:
                     if isinstance(ex, LoadClientAppError):
                         reason = (
                             "An exception was raised when attempting to load "
-                            "the ClientApp module"
+                            "`ClientApp`"
                         )
                         e_code = ErrorCode.LOAD_CLIENT_APP_EXCEPTION
                         exc_entity = "SuperNode"