Convert Catalogue to a Collection

[r2c2.git] / source / libr2c2 / signaltype.h

diff --git a/source/libr2c2/signaltype.h b/source/libr2c2/signaltype.h
index 97de833d71b5b7cdf59b93e57438ff44d9f46e94..be3857a8da2a7186f6d1d966184813de8680d745 100644 (file)
--- a/source/libr2c2/signaltype.h
+++ b/source/libr2c2/signaltype.h
@@ -37,7 +37,7 @@ private:
        std::string object;
 
 public:
-       SignalType(const ArticleNumber &);
+       SignalType(const ArticleNumber & = ArticleNumber());
 
        const IndicationList &get_indications() const { return indications; }
        const std::string &get_object() const { return object; }