diff --git a/api/onnx_web/server/params.py b/api/onnx_web/server/params.py
index a9d8aef9..2f505432 100644
--- a/api/onnx_web/server/params.py
+++ b/api/onnx_web/server/params.py
@@ -46,7 +46,7 @@ def pipeline_from_request(
     # diffusion model
     model = get_not_empty(request.args, "model", get_config_value("model"))
     model_path = get_model_path(server, model)
-    control = get_from_list(request.args, "control", get_network_models())
+    control = get_from_list(request.args, "control", [m.name for m in get_network_models()])
 
     # pipeline stuff
     pipeline = get_from_list(
diff --git a/api/onnx_web/utils.py b/api/onnx_web/utils.py
index 1e1f875b..23980fdd 100644
--- a/api/onnx_web/utils.py
+++ b/api/onnx_web/utils.py
@@ -45,7 +45,7 @@ def get_from_list(
     if selected in values:
         return selected
 
-    logger.warn("invalid selection: %s", selected)
+    logger.warn("invalid selection %s, options: %s", selected, values)
     if len(values) > 0:
         return values[0]