diff --git a/backend/open_webui/routers/functions.py b/backend/open_webui/routers/functions.py
index 202aa74ca4..c36e656d5f 100644
--- a/backend/open_webui/routers/functions.py
+++ b/backend/open_webui/routers/functions.py
@@ -431,8 +431,10 @@ async def update_function_valves_by_id(
             try:
                 form_data = {k: v for k, v in form_data.items() if v is not None}
                 valves = Valves(**form_data)
-                Functions.update_function_valves_by_id(id, valves.model_dump())
-                return valves.model_dump()
+
+                valves_dict = valves.model_dump(exclude_unset=True)
+                Functions.update_function_valves_by_id(id, valves_dict)
+                return valves_dict
             except Exception as e:
                 log.exception(f"Error updating function values by id {id}: {e}")
                 raise HTTPException(
@@ -514,10 +516,11 @@ async def update_function_user_valves_by_id(
             try:
                 form_data = {k: v for k, v in form_data.items() if v is not None}
                 user_valves = UserValves(**form_data)
+                user_valves_dict = user_valves.model_dump(exclude_unset=True)
                 Functions.update_user_valves_by_id_and_user_id(
-                    id, user.id, user_valves.model_dump()
+                    id, user.id, user_valves_dict
                 )
-                return user_valves.model_dump()
+                return user_valves_dict
             except Exception as e:
                 log.exception(f"Error updating function user valves by id {id}: {e}")
                 raise HTTPException(
diff --git a/backend/open_webui/routers/tools.py b/backend/open_webui/routers/tools.py
index 71c7069fd3..e1854b65fc 100644
--- a/backend/open_webui/routers/tools.py
+++ b/backend/open_webui/routers/tools.py
@@ -486,8 +486,9 @@ async def update_tools_valves_by_id(
     try:
         form_data = {k: v for k, v in form_data.items() if v is not None}
         valves = Valves(**form_data)
-        Tools.update_tool_valves_by_id(id, valves.model_dump())
-        return valves.model_dump()
+        valves_dict = valves.model_dump(exclude_unset=True)
+        Tools.update_tool_valves_by_id(id, valves_dict)
+        return valves_dict
     except Exception as e:
         log.exception(f"Failed to update tool valves by id {id}: {e}")
         raise HTTPException(
@@ -562,10 +563,11 @@ async def update_tools_user_valves_by_id(
             try:
                 form_data = {k: v for k, v in form_data.items() if v is not None}
                 user_valves = UserValves(**form_data)
+                user_valves_dict = user_valves.model_dump(exclude_unset=True)
                 Tools.update_user_valves_by_id_and_user_id(
-                    id, user.id, user_valves.model_dump()
+                    id, user.id, user_valves_dict
                 )
-                return user_valves.model_dump()
+                return user_valves_dict
             except Exception as e:
                 log.exception(f"Failed to update user valves by id {id}: {e}")
                 raise HTTPException(