diff --git a/sdk/ai/azopenai/CHANGELOG.md b/sdk/ai/azopenai/CHANGELOG.md
index 7c98129a21cd..6d75f442f797 100644
--- a/sdk/ai/azopenai/CHANGELOG.md
+++ b/sdk/ai/azopenai/CHANGELOG.md
@@ -7,6 +7,7 @@
 ### Breaking Changes
 
 ### Bugs Fixed
+- Fixed a problem that filename would be empty if not explicitly specified in the `UploadFile` operation. (PR#24171)
 
 ### Other Changes
 
diff --git a/sdk/ai/azopenai/assets.json b/sdk/ai/azopenai/assets.json
index da9480a5e6e4..1c1b4abaa1e0 100644
--- a/sdk/ai/azopenai/assets.json
+++ b/sdk/ai/azopenai/assets.json
@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "go",
   "TagPrefix": "go/ai/azopenai",
-  "Tag": "go/ai/azopenai_0efed71611"
+  "Tag": "go/ai/azopenai_4a8ededa66"
 }
diff --git a/sdk/ai/azopenai/client_custom_files.go b/sdk/ai/azopenai/client_custom_files.go
index d170aefe71c9..70ccdb14f265 100644
--- a/sdk/ai/azopenai/client_custom_files.go
+++ b/sdk/ai/azopenai/client_custom_files.go
@@ -29,7 +29,7 @@ func (client *Client) uploadFileCreateRequest(ctx context.Context, file io.ReadS
 		return nil, err
 	}
 	req.Raw().Header["Accept"] = []string{"application/json"}
-	fileName := ""
+	fileName := "file.txt"
 
 	if options != nil && options.Filename != nil {
 		fileName = *options.Filename