diff --git a/backend/open_webui/routers/ollama.py b/backend/open_webui/routers/ollama.py
index 9606763b00..7873efafce 100644
--- a/backend/open_webui/routers/ollama.py
+++ b/backend/open_webui/routers/ollama.py
@@ -879,6 +879,7 @@ async def delete_model(
     url = request.app.state.config.OLLAMA_BASE_URLS[url_idx]
     key = get_api_key(url_idx, url, request.app.state.config.OLLAMA_API_CONFIGS)
 
+    r = None
     try:
         headers = {
             "Content-Type": "application/json",
@@ -892,7 +893,7 @@ async def delete_model(
             method="DELETE",
             url=f"{url}/api/delete",
             headers=headers,
-            data=form_data.model_dump_json(exclude_none=True).encode(),
+            json=form_data,
         )
         r.raise_for_status()
 
@@ -949,10 +950,7 @@ async def show_model_info(
             headers = include_user_info_headers(headers, user)
 
         r = requests.request(
-            method="POST",
-            url=f"{url}/api/show",
-            headers=headers,
-            data=form_data.model_dump_json(exclude_none=True).encode(),
+            method="POST", url=f"{url}/api/show", headers=headers, json=form_data
         )
         r.raise_for_status()
 
diff --git a/src/lib/components/admin/Settings/Models/Manage/ManageOllama.svelte b/src/lib/components/admin/Settings/Models/Manage/ManageOllama.svelte
index 75ee9b2b02..1c96ef8127 100644
--- a/src/lib/components/admin/Settings/Models/Manage/ManageOllama.svelte
+++ b/src/lib/components/admin/Settings/Models/Manage/ManageOllama.svelte
@@ -811,9 +811,8 @@
 								bind:value={deleteModelTag}
 								placeholder={$i18n.t('Select a model')}
 							>
-								{#if !deleteModelTag}
-									<option value="" disabled selected>{$i18n.t('Select a model')}</option>
-								{/if}
+								<option value="" disabled selected>{$i18n.t('Select a model')}</option>
+
 								{#each ollamaModels as model}
 									<option value={model.id} class="bg-gray-50 dark:bg-gray-700"
 										>{model.name + ' (' + (model.size / 1024 ** 3).toFixed(1) + ' GB)'}</option