diff --git a/vvp/examples/hello.vvp b/vvp/examples/hello.vvp
index d62053a77..1a12e74d2 100644
--- a/vvp/examples/hello.vvp
+++ b/vvp/examples/hello.vvp
@@ -1,3 +1,4 @@
+:vpi_module "system";
 
 ; Copyright (c) 2001  Stephen Williams (steve@icarus.com)
 ;
diff --git a/vvp/examples/hello2.vvp b/vvp/examples/hello2.vvp
index a1e89d06d..65ffd2727 100644
--- a/vvp/examples/hello2.vvp
+++ b/vvp/examples/hello2.vvp
@@ -1,3 +1,4 @@
+:vpi_module "system";
 
 ; Copyright (c) 2001  Stephen Williams (steve@icarus.com)
 ;