diff --git a/dist/index.mjs b/dist/index.mjs
index b957cb824faa79cf01ba3a504f221870bd8e306a..4d71d30f655775d61537d9d8b73f6e17d41fa67e 100644
--- a/dist/index.mjs
+++ b/dist/index.mjs
@@ -452,7 +452,7 @@ function convertToGoogleGenerativeAIMessages(prompt, options) {
 
 // src/get-model-path.ts
 function getModelPath(modelId) {
-  return modelId.includes("/") ? modelId : `models/${modelId}`;
+  return modelId?.includes("models/") ? modelId : `models/${modelId}`;
 }
 
 // src/google-generative-ai-options.ts