diff --git a/tests/vm/tslow_tables.nim b/tests/vm/tslow_tables.nim
index 7ee523a87c..f726c63231 100644
--- a/tests/vm/tslow_tables.nim
+++ b/tests/vm/tslow_tables.nim
@@ -11,8 +11,7 @@ done'''
 import tables
 
 type Flop = object
-  a: int
-  #array[128, int]  # <-- compile time is proportional to array size
+  a: array[128, int]  # <-- compile time is proportional to array size
 
 proc hop(): bool =
   var v: Table[int, Flop]