diff --git a/Contrib/NSISdl/SConscript b/Contrib/NSISdl/SConscript
index 71094e55..7dc9cd80 100644
--- a/Contrib/NSISdl/SConscript
+++ b/Contrib/NSISdl/SConscript
@@ -21,4 +21,4 @@ docs = Split("""
 
 Import('BuildPlugin')
 
-BuildPlugin(target, files, libs, docs = docs)
+BuildPlugin(target, files, libs, docs = docs, cppused = 1)