diff --git a/resources/desktop/com.github.rssguard.appdata.xml b/resources/desktop/com.github.rssguard.appdata.xml
index c4a4542df..3c5eb5c37 100644
--- a/resources/desktop/com.github.rssguard.appdata.xml
+++ b/resources/desktop/com.github.rssguard.appdata.xml
@@ -26,7 +26,7 @@
   <url type="donation">https://github.com/sponsors/martinrotter</url>
   <content_rating type="oars-1.1" />
   <releases>
-    <release version="4.0.3" date="2021-10-04"/>
+    <release version="4.0.3" date="2021-10-05"/>
   </releases>
   <content_rating type="oars-1.0">
     <content_attribute id="violence-cartoon">none</content_attribute>
diff --git a/src/librssguard/core/messageobject.cpp b/src/librssguard/core/messageobject.cpp
index 0d81d578f..8d9603c4c 100644
--- a/src/librssguard/core/messageobject.cpp
+++ b/src/librssguard/core/messageobject.cpp
@@ -17,6 +17,10 @@ void MessageObject::setMessage(Message* message) {
   m_message = message;
 }
 
+bool MessageObject::isDuplicate(DuplicationAttributeCheck attribute_check) const {
+  return isDuplicateWithAttribute(attribute_check);
+}
+
 bool MessageObject::isDuplicateWithAttribute(MessageObject::DuplicationAttributeCheck attribute_check) const {
   // Check database according to duplication attribute_check.
   QSqlQuery q(*m_db);
diff --git a/src/librssguard/core/messageobject.h b/src/librssguard/core/messageobject.h
index 273894fde..904712654 100644
--- a/src/librssguard/core/messageobject.h
+++ b/src/librssguard/core/messageobject.h
@@ -78,6 +78,7 @@ class MessageObject : public QObject {
     // Check if message is duplicate with another messages in DB.
     // Parameter "attribute_check" is DuplicationAttributeCheck enum
     // value casted to int.
+    Q_INVOKABLE bool isDuplicate(MessageObject::DuplicationAttributeCheck attribute_check) const;
     Q_INVOKABLE bool isDuplicateWithAttribute(MessageObject::DuplicationAttributeCheck attribute_check) const;
 
     // Adds given label to list of assigned labels to this message.