diff --git a/src/blackmisc/network/textmessage.cpp b/src/blackmisc/network/textmessage.cpp
index 8f85b5945..6576eb913 100644
--- a/src/blackmisc/network/textmessage.cpp
+++ b/src/blackmisc/network/textmessage.cpp
@@ -118,6 +118,13 @@ namespace BlackMisc
             return CComSystem::isValidCivilAviationFrequency(m_frequency);
         }
 
+        bool CTextMessage::mentionsCallsign(const CCallsign &callsign) const
+        {
+            if (callsign.isEmpty()) { return false; }
+            if (m_message.length() < callsign.asString().length()) { return false; }
+            return m_message.contains(callsign.asString(), Qt::CaseInsensitive);
+        }
+
         QString CTextMessage::getAsciiOnlyMessage() const
         {
             if (m_message.isEmpty()) { return {}; }
diff --git a/src/blackmisc/network/textmessage.h b/src/blackmisc/network/textmessage.h
index a2f9b4e91..8cfe4993c 100644
--- a/src/blackmisc/network/textmessage.h
+++ b/src/blackmisc/network/textmessage.h
@@ -85,6 +85,9 @@ namespace BlackMisc
             //! Get message
             const QString &getMessage() const { return m_message; }
 
+            //! Is the callsign given mentioned in that message
+            bool mentionsCallsign(const Aviation::CCallsign &callsign) const;
+
             //! Get ASCII only message
             QString getAsciiOnlyMessage() const;