diff --git a/rsProgramVertex.cpp b/rsProgramVertex.cpp
index 23fcbe7..4374e51 100644
--- a/rsProgramVertex.cpp
+++ b/rsProgramVertex.cpp
@@ -136,7 +136,7 @@
     mvp.vectorMultiply(v4out, v3in);
 }
 
-void ProgramVertex::serialize(OStream *stream) const {
+void ProgramVertex::serialize(Context *rsc, OStream *stream) const {
 }
 
 ProgramVertex *ProgramVertex::createFromStream(Context *rsc, IStream *stream) {