diff --git a/src/app/api/generate/providers/fal.ts b/src/app/api/generate/providers/fal.ts
index 5fcbe0c1..112e6c9e 100644
--- a/src/app/api/generate/providers/fal.ts
+++ b/src/app/api/generate/providers/fal.ts
@@ -279,7 +279,9 @@ export async function generateWithFalQueue(
           filteredInputs[key] = [processedValue];
         } else if (!schemaArrayParams.has(key) && Array.isArray(processedValue)) {
           // Unwrap array to single value if schema expects a string (e.g. image_url)
-          filteredInputs[key] = processedValue[0];
+          if (processedValue.length > 0) {
+            filteredInputs[key] = processedValue[0];
+          }
         } else {
           filteredInputs[key] = processedValue;
         }