diff --git a/lib/pure/ioselectors.nim b/lib/pure/ioselectors.nim
index 0583c275a2..a5d5d2c01b 100644
--- a/lib/pure/ioselectors.nim
+++ b/lib/pure/ioselectors.nim
@@ -185,7 +185,7 @@ else:
     import locks
 
     type
-      SharedArray {.unchecked.}[T] = array[0..100_000_000, T]
+      SharedArray {.unchecked.}[T] = array[0..100, T]
 
     proc allocSharedArray[T](nsize: int): ptr SharedArray[T] =
       result = cast[ptr SharedArray[T]](allocShared0(sizeof(T) * nsize))