diff --git a/tools/niminst/niminst.nim b/tools/niminst/niminst.nim
index 5244536099..4f4d7adfc4 100644
--- a/tools/niminst/niminst.nim
+++ b/tools/niminst/niminst.nim
@@ -544,7 +544,7 @@ proc srcdist(c: var ConfigData) =
       var dir = getOutputDir(c) / buildDir(osA, cpuA)
       if dirExists(dir): removeDir(dir)
       createDir(dir)
-      var cmd = ("$# compile -f --incremental:off --compileonly " &
+      var cmd = ("$# compile -f --incremental:off --d:nimKochBootstrap --compileonly " &
                  "--gen_mapping --cc:gcc --skipUserCfg" &
                  " --os:$# --cpu:$# $# $#") %
                  [findNim(), osname, cpuname, c.nimArgs, c.mainfile]