diff --git a/mlrun/model.py b/mlrun/model.py
index c3851bd462d..e0e9243d8f4 100644
--- a/mlrun/model.py
+++ b/mlrun/model.py
@@ -656,22 +656,22 @@ class HyperParamOptions(ModelObj):
     """Hyper Parameter Options
 
     Parameters:
-        param_file (str):       hyper params input file path/url, instead of inline
-        strategy (str):         hyper param strategy - grid, list or random
-        selector (str):         selection criteria for best result ([min|max.]<result>), e.g. max.accuracy
-        stop_condition (str):   early stop condition e.g. "accuracy > 0.9"
-        parallel_runs (int):    number of param combinations to run in parallel (over Dask)
-        dask_cluster_uri (str): db uri for a deployed dask cluster function, e.g. db://myproject/dask
-        max_iterations (int):   max number of runs (in random strategy)
-        max_errors (int):       max number of child runs errors for the overall job to fail
-        teardown_dask (bool):   kill the dask cluster pods after the runs
+        param_file (str):                   hyper params input file path/url, instead of inline
+        strategy (HyperParamStrategies):    hyper param strategy - grid, list or random
+        selector (str):                     selection criteria for best result ([min|max.]<result>), e.g. max.accuracy
+        stop_condition (str):               early stop condition e.g. "accuracy > 0.9"
+        parallel_runs (int):                number of param combinations to run in parallel (over Dask)
+        dask_cluster_uri (str):             db uri for a deployed dask cluster function, e.g. db://myproject/dask
+        max_iterations (int):               max number of runs (in random strategy)
+        max_errors (int):                   max number of child runs errors for the overall job to fail
+        teardown_dask (bool):               kill the dask cluster pods after the runs
     """
 
     def __init__(
         self,
         param_file=None,
-        strategy=None,
-        selector: HyperParamStrategies = None,
+        strategy: typing.Optional[HyperParamStrategies] = None,
+        selector=None,
         stop_condition=None,
         parallel_runs=None,
         dask_cluster_uri=None,
diff --git a/mlrun/runtimes/serving.py b/mlrun/runtimes/serving.py
index 45d477acb5e..c2435fd8cf5 100644
--- a/mlrun/runtimes/serving.py
+++ b/mlrun/runtimes/serving.py
@@ -638,6 +638,9 @@ def deploy(
             self.spec.secret_sources = self._secrets.to_serial()
 
         if self._spec.function_refs:
+            # ensure the function is available to the UI while deploying the child functions
+            self.save(versioned=False)
+
             # deploy child functions
             self._add_ref_triggers()
             self._deploy_function_refs()