diff --git a/lib/tdf3/src/binary.ts b/lib/tdf3/src/binary.ts
index 9b83fe27..1579825c 100644
--- a/lib/tdf3/src/binary.ts
+++ b/lib/tdf3/src/binary.ts
@@ -67,7 +67,7 @@ function adjustSliceParams(length: number, start: number, end?: number): [number
     result.push(end);
   }
 
-  return (result as [number, number?]);
+  return result as [number, number?];
 }
 
 class ArrayBufferBinary extends Binary {