diff --git a/util/test/demos/test_common.cpp b/util/test/demos/test_common.cpp
index f0cc623c0..593ab7c6a 100644
--- a/util/test/demos/test_common.cpp
+++ b/util/test/demos/test_common.cpp
@@ -211,7 +211,7 @@ bool SpvCompilationSupported()
   if(!pipe)
     return false;
 
-  msleep(250);
+  msleep(500);
 
   int code = pclose(pipe);