diff --git a/lib/system.nim b/lib/system.nim
index 59d0d04b78..1d2ca6a9a5 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -1256,7 +1256,7 @@ proc compileOption*(option, arg: string): bool {.
   ##     echo "compiled with optimization for size and uses Boehm's GC"
 
 const
-  hasThreadSupport = compileOption("threads")
+  hasThreadSupport = compileOption("threads") and not defined(nimscript)
   hasSharedHeap = defined(boehmgc) or defined(gogc) # don't share heaps; every thread has its own
   taintMode = compileOption("taintmode")