diff --git a/src/diagnosticsdialog.cpp b/src/diagnosticsdialog.cpp
index 085df8f22..5dbc6b10e 100644
--- a/src/diagnosticsdialog.cpp
+++ b/src/diagnosticsdialog.cpp
@@ -123,6 +123,11 @@ void DiagnosticsDialog::updateLogView()
             }
 
             SipInfo sipInfo = SipHandler::instance()->sipInfo( peerId );
+            if( !sipInfo.isValid() )
+            {
+                qDebug() << Q_FUNC_INFO << "SipInfo invalid for " << peerId;
+                continue;
+            }
             if( sipInfo.isVisible() )
                 log.append(
                     QString("       %1: %2:%3 (%4)\n")