diff --git a/demos/c/program/wscript_build b/demos/c/program/wscript_build
index 9ecd5f5a..3f9e1f1b 100644
--- a/demos/c/program/wscript_build
+++ b/demos/c/program/wscript_build
@@ -1,7 +1,7 @@
 #! /usr/bin/env python
 
 def write_header(tsk):
-	tsk.outputs[0].write('int abc = 423;')
+	tsk.outputs[0].write('int abc = 423;\n')
 bld(rule=write_header, target='b.h', ext_out=['.h'])
 
 bld.program(