1 files changed, 1 insertions, 1 deletions

diff --git a/koch.nim b/koch.nim
index 3b00d3564..44d38589b 100644
--- a/koch.nim
+++ b/koch.nim
@@ -492,7 +492,7 @@ proc icTest(args: string) =
   for fragment in content.split("#!EDIT!#"):
     let file = inp.replace(".nim", "_temp.nim")
     writeFile(file, fragment)
-    var cmd = nimExe & " cpp --ic:on --listcmd "
+    var cmd = nimExe & " cpp --ic:on -d:nimIcIntegrityChecks --listcmd "
     if i == 0:
       cmd.add "-f "
     cmd.add quoteShell(file)