diff --git a/linphone-desktop/assets/languages/en.ts b/linphone-desktop/assets/languages/en.ts
index 8fa8b42ee..01b7792a0 100644
--- a/linphone-desktop/assets/languages/en.ts
+++ b/linphone-desktop/assets/languages/en.ts
@@ -315,6 +315,10 @@
         <source>callErrorNotAcceptable</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>noMediaEncryption</source>
+        <translation>None</translation>
+    </message>
 </context>
 <context>
     <name>CallSipAddress</name>
diff --git a/linphone-desktop/assets/languages/fr.ts b/linphone-desktop/assets/languages/fr.ts
index 55fbe0a16..f0827c41a 100644
--- a/linphone-desktop/assets/languages/fr.ts
+++ b/linphone-desktop/assets/languages/fr.ts
@@ -315,6 +315,10 @@
         <source>callErrorNotAcceptable</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>noMediaEncryption</source>
+        <translation>Aucun</translation>
+    </message>
 </context>
 <context>
     <name>CallSipAddress</name>
diff --git a/linphone-desktop/src/Utils.hpp b/linphone-desktop/src/Utils.hpp
index ca058fa52..1ebcd0c71 100644
--- a/linphone-desktop/src/Utils.hpp
+++ b/linphone-desktop/src/Utils.hpp
@@ -27,6 +27,18 @@
 
 // =============================================================================
 
+/*
+ * Define telling G++ that a 'break' statement has been deliberately omitted
+ * in switch block.
+ */
+#ifndef UTILS_NO_BREAK
+  #if defined(__GNUC__) && __GNUC__ >= 7
+    #define UTILS_NO_BREAK __attribute__((fallthrough))
+  #else
+    #define UTILS_NO_BREAK
+  #endif // if defined(__GNUC__) && __GNUC__ >= 7
+#endif // ifndef UTILS_NO_BREAK
+
 namespace Utils {
   inline QString coreStringToAppString (const std::string &string) {
     return QString::fromLocal8Bit(string.c_str(), static_cast<int>(string.size()));
diff --git a/linphone-desktop/src/components/call/CallModel.cpp b/linphone-desktop/src/components/call/CallModel.cpp
index 09bd8d44b..56ba5127a 100644
--- a/linphone-desktop/src/components/call/CallModel.cpp
+++ b/linphone-desktop/src/components/call/CallModel.cpp
@@ -504,18 +504,7 @@ void CallModel::verifyAuthenticationToken (bool verify) {
 // -----------------------------------------------------------------------------
 
 CallModel::CallEncryption CallModel::getEncryption () const {
-  switch (mCall->getCurrentParams()->getMediaEncryption()) {
-    case linphone::MediaEncryptionSRTP:
-      return CallEncryptionSRTP;
-    case linphone::MediaEncryptionZRTP:
-      return CallEncryptionZRTP;
-    case linphone::MediaEncryptionDTLS:
-      return CallEncryptionDTLS;
-    case linphone::MediaEncryptionNone:
-      break;
-  }
-
-  return CallEncryptionNone;
+  return static_cast<CallEncryption>(mCall->getCurrentParams()->getMediaEncryption());
 }
 
 bool CallModel::isSecured () const {
@@ -528,18 +517,35 @@ bool CallModel::isSecured () const {
 
 // -----------------------------------------------------------------------------
 
-QString CallModel::getLocalSAS () const {
+QString CallModel::getLocalSas () const {
   QString token = ::Utils::coreStringToAppString(mCall->getAuthenticationToken());
   return mCall->getDir() == linphone::CallDirIncoming ? token.left(2).toUpper() : token.right(2).toUpper();
 }
 
-QString CallModel::getRemoteSAS () const {
+QString CallModel::getRemoteSas () const {
   QString token = ::Utils::coreStringToAppString(mCall->getAuthenticationToken());
   return mCall->getDir() != linphone::CallDirIncoming ? token.left(2).toUpper() : token.right(2).toUpper();
 }
 
 // -----------------------------------------------------------------------------
 
+QString CallModel::getSecuredString () const {
+  switch (mCall->getCurrentParams()->getMediaEncryption()) {
+    case linphone::MediaEncryptionSRTP:
+      return QStringLiteral("SRTP");
+    case linphone::MediaEncryptionZRTP:
+      return QStringLiteral("ZRTP");
+    case linphone::MediaEncryptionDTLS:
+      return QStringLiteral("DTLS");
+    case linphone::MediaEncryptionNone:
+      break;
+  }
+
+  return tr("noMediaEncryption");
+}
+
+// -----------------------------------------------------------------------------
+
 QVariantList CallModel::getAudioStats () const {
   return mAudioStats;
 }
@@ -619,8 +625,8 @@ void CallModel::updateStats (const shared_ptr<const linphone::CallStats> &callSt
       statsList << createStat(tr("callStatsReceivedVideoDefinition"), receivedVideoDefinition == receivedVideoDefinitionName
         ? receivedVideoDefinition
         : QString("%1 (%2)").arg(receivedVideoDefinition).arg(receivedVideoDefinitionName));
-    }
-    break;
+    } break;
+
     default:
       break;
   }
diff --git a/linphone-desktop/src/components/call/CallModel.hpp b/linphone-desktop/src/components/call/CallModel.hpp
index ad7aec7d2..03d3c0cc7 100644
--- a/linphone-desktop/src/components/call/CallModel.hpp
+++ b/linphone-desktop/src/components/call/CallModel.hpp
@@ -57,8 +57,9 @@ class CallModel : public QObject {
 
   Q_PROPERTY(CallEncryption encryption READ getEncryption NOTIFY securityUpdated);
   Q_PROPERTY(bool isSecured READ isSecured NOTIFY securityUpdated);
-  Q_PROPERTY(QString localSAS READ getLocalSAS NOTIFY securityUpdated);
-  Q_PROPERTY(QString remoteSAS READ getRemoteSAS NOTIFY securityUpdated);
+  Q_PROPERTY(QString localSas READ getLocalSas NOTIFY securityUpdated);
+  Q_PROPERTY(QString remoteSas READ getRemoteSas NOTIFY securityUpdated);
+  Q_PROPERTY(QString securedString READ getSecuredString NOTIFY securityUpdated);
 
 public:
   enum CallStatus {
@@ -73,10 +74,10 @@ public:
   Q_ENUM(CallStatus);
 
   enum CallEncryption {
-    CallEncryptionNone,
-    CallEncryptionSRTP,
-    CallEncryptionZRTP,
-    CallEncryptionDTLS
+    CallEncryptionNone = linphone::MediaEncryptionNone,
+    CallEncryptionDtls = linphone::MediaEncryptionDTLS,
+    CallEncryptionSrtp = linphone::MediaEncryptionSRTP,
+    CallEncryptionZrtp = linphone::MediaEncryptionZRTP
   };
 
   Q_ENUM(CallEncryption);
@@ -165,8 +166,10 @@ private:
   CallEncryption getEncryption () const;
   bool isSecured () const;
 
-  QString getLocalSAS () const;
-  QString getRemoteSAS () const;
+  QString getLocalSas () const;
+  QString getRemoteSas () const;
+
+  QString getSecuredString () const;
 
   QVariantList getAudioStats () const;
   QVariantList getVideoStats () const;
diff --git a/linphone-desktop/src/externals/single-application/SingleApplication.cpp b/linphone-desktop/src/externals/single-application/SingleApplication.cpp
index c45f64234..dc1591683 100644
--- a/linphone-desktop/src/externals/single-application/SingleApplication.cpp
+++ b/linphone-desktop/src/externals/single-application/SingleApplication.cpp
@@ -43,6 +43,8 @@
   #include <lmcons.h>
 #endif // ifdef Q_OS_WIN
 
+#include "../../Utils.hpp"
+
 #include "SingleApplication.hpp"
 #include "SingleApplicationPrivate.hpp"
 
@@ -302,7 +304,7 @@ void SingleApplicationPrivate::slotConnectionEstablished () {
           tmp = nextConnSocket->read(checksum.length());
           if (checksum == tmp)
             break; // Otherwise set to invalid connection (next line)
-        }
+        } UTILS_NO_BREAK;
         default:
           connectionType = InvalidConnection;
       }
@@ -315,23 +317,13 @@ void SingleApplicationPrivate::slotConnectionEstablished () {
     return;
   }
 
-  QObject::connect(
-    nextConnSocket,
-    &QLocalSocket::aboutToClose,
-    this,
-    [nextConnSocket, instanceId, this]() {
+  QObject::connect(nextConnSocket, &QLocalSocket::aboutToClose, this, [nextConnSocket, instanceId, this]() {
       Q_EMIT this->slotClientConnectionClosed(nextConnSocket, instanceId);
-    }
-  );
+    });
 
-  QObject::connect(
-    nextConnSocket,
-    &QLocalSocket::readyRead,
-    this,
-    [nextConnSocket, instanceId, this]() {
+  QObject::connect(nextConnSocket, &QLocalSocket::readyRead, this, [nextConnSocket, instanceId, this]() {
       Q_EMIT this->slotDataAvailable(nextConnSocket, instanceId);
-    }
-  );
+    });
 
   if (connectionType == NewInstance || (
         connectionType == SecondaryInstance &&
diff --git a/linphone-desktop/ui/views/App/Calls/Incall.qml b/linphone-desktop/ui/views/App/Calls/Incall.qml
index 97b32de6c..875acad4b 100644
--- a/linphone-desktop/ui/views/App/Calls/Incall.qml
+++ b/linphone-desktop/ui/views/App/Calls/Incall.qml
@@ -107,7 +107,12 @@ Rectangle {
           id: callSecure
 
           icon: incall.call.isSecured ? 'call_chat_secure' : 'call_chat_unsecure'
+
           onClicked: zrtp.visible = (incall.call.encryption === CallModel.CallEncryptionZRTP)
+
+          TooltipArea {
+            text: incall.call.securedString
+          }
         }
       }
 
diff --git a/linphone-desktop/ui/views/App/Calls/ZrtpTokenAuthentication.qml b/linphone-desktop/ui/views/App/Calls/ZrtpTokenAuthentication.qml
index 8e7103e19..aa7f77185 100644
--- a/linphone-desktop/ui/views/App/Calls/ZrtpTokenAuthentication.qml
+++ b/linphone-desktop/ui/views/App/Calls/ZrtpTokenAuthentication.qml
@@ -62,7 +62,7 @@ ColumnLayout {
         pointSize: CallStyle.zrtpArea.text.fontSize
       }
 
-      text: zrtp.call.localSAS
+      text: zrtp.call.localSas
     }
 
     Text {
@@ -85,7 +85,7 @@ ColumnLayout {
         pointSize: CallStyle.zrtpArea.text.fontSize
       }
 
-      text: zrtp.call.remoteSAS
+      text: zrtp.call.remoteSas
     }
   }