diff --git a/demo/wasienv/button/WasiButton1.lpr b/demo/wasienv/button/WasiButton1.lpr
index 1b8550d..5e7b0bb 100644
--- a/demo/wasienv/button/WasiButton1.lpr
+++ b/demo/wasienv/button/WasiButton1.lpr
@@ -5,7 +5,7 @@ library WasiButton1;
 {$codepage UTF8}
 
 uses
-  SysUtils, JOB.Shared, JOB_Web, JOB.JS;
+  NoThreads, SysUtils, JOB.Shared, JOB_Web, JOB.JS;
 
 type
 
diff --git a/demo/wasienv/dom/WasiDomTest1.lpr b/demo/wasienv/dom/WasiDomTest1.lpr
index f6f7742..a55184f 100644
--- a/demo/wasienv/dom/WasiDomTest1.lpr
+++ b/demo/wasienv/dom/WasiDomTest1.lpr
@@ -11,7 +11,7 @@ uses
   {$IFDEF UseDucet}
   unicodeducet, unicodedata, fpwidestring,
   {$ENDIF}
-  Math, SysUtils, Variants, JOB.Shared, JOB_Web, JOB.JS;
+  NoThreads, Math, SysUtils, Variants, JOB.Shared, JOB_Web, JOB.JS;
 
 type
   EWasiTest = class(Exception);