diff --git a/vm/program.go b/vm/program.go
index d634efc62..27b8f6098 100644
--- a/vm/program.go
+++ b/vm/program.go
@@ -343,3 +343,8 @@ func (program *Program) DisassembleWriter(w io.Writer) {
 		}
 	}
 }
+
+// Source returns origin file.Source.
+func (program *Program) Source() *file.Source {
+	return program.source
+}