diff --git a/app/utils.ts b/app/utils.ts
index 962e68a10..180155799 100644
--- a/app/utils.ts
+++ b/app/utils.ts
@@ -254,11 +254,16 @@ export function getMessageImages(message: RequestMessage): string[] {
 }
 
 export function isVisionModel(model: string) {
-  const clientConfig = getClientConfig();
-  const envVisionModels = clientConfig?.visionModels
-    ?.split(",")
-    .map((m) => m.trim());
-  if (envVisionModels?.includes(model)) {
+  const clientVisionModels = getClientConfig()?.visionModels || "";
+  const envVisionModels = process.env.VISION_MODELS || "";
+  const allVisionModels = `${clientVisionModels},${envVisionModels}`;
+
+  const visionModelsList = allVisionModels
+    .split(",")
+    .filter(Boolean)
+    .map((m: string) => m.trim());
+
+  if (visionModelsList.includes(model)) {
     return true;
   }
   return (
diff --git a/test/vision-model-checker.test.ts b/test/vision-model-checker.test.ts
index 734e992d8..7fb7f54c5 100644
--- a/test/vision-model-checker.test.ts
+++ b/test/vision-model-checker.test.ts
@@ -49,10 +49,11 @@ describe("isVisionModel", () => {
   });
 
   test("should identify models from VISION_MODELS env var", () => {
-    process.env.VISION_MODELS = "custom-vision-model,another-vision-model";
+    process.env.VISION_MODELS = "custom-vision-model,another-vision-model,OpenGVLab/InternVL2-26B";
     
     expect(isVisionModel("custom-vision-model")).toBe(true);
     expect(isVisionModel("another-vision-model")).toBe(true);
+    expect(isVisionModel("OpenGVLab/InternVL2-26B")).toBe(true);
     expect(isVisionModel("unrelated-model")).toBe(false);
   });