diff --git a/lib/pure/ospaths.nim b/lib/pure/ospaths.nim
index 99f6bcd4d..fd28db443 100644
--- a/lib/pure/ospaths.nim
+++ b/lib/pure/ospaths.nim
@@ -10,6 +10,10 @@
 # Included by the ``os`` module but a module in its own right for NimScript
 # support.
 
+when isMainModule:
+  {.pragma: rtl.}
+  import strutils
+
 when defined(nimscript) or (defined(nimdoc) and not declared(os)):
   {.pragma: rtl.}
   {.push hint[ConvFromXtoItselfNotNeeded]:off.}