diff --git a/hoot-core/src/main/cpp/hoot/core/criterion/TagKeyCriterion.h b/hoot-core/src/main/cpp/hoot/core/criterion/TagKeyCriterion.h
index d78ae6a..d9b4d35 100644
--- a/hoot-core/src/main/cpp/hoot/core/criterion/TagKeyCriterion.h
+++ b/hoot-core/src/main/cpp/hoot/core/criterion/TagKeyCriterion.h
@@ -62,6 +62,9 @@ public:
virtual void setConfiguration(const Settings& conf);
+ virtual QString toString() const override
+ { return QString::fromStdString(className()).remove("hoot::"); }
+
protected:
explicit TagKeyCriterion(QStringList keys);