diff --git a/flowjs/flowjs.d.ts b/flowjs/flowjs.d.ts
index e9e90055b2..186cd25797 100644
--- a/flowjs/flowjs.d.ts
+++ b/flowjs/flowjs.d.ts
@@ -44,7 +44,7 @@ declare module flowjs {
         uploadMethod?: string;
         allowDuplicateUploads?: boolean;
         prioritizeFirstAndLastChunk?: boolean;
-        testchunks?: boolean;
+        testChunks?: boolean;
         preprocess?: Function;
         initFileFn?: Function;
         generateUniqueIdentifier?: Function;