diff --git a/lib/nimrtl.nim b/lib/nimrtl.nim
index 335207f54e..7ec5eb981f 100644
--- a/lib/nimrtl.nim
+++ b/lib/nimrtl.nim
@@ -32,4 +32,4 @@ when not defined(createNimRtl):
 
 import
   parseutils, strutils, parseopt, parsecfg, strtabs, unicode, pegs, ropes,
-  os, osproc, times
+  os, osproc, times, cstrutils