diff --git a/src/core/tcpslavebase.cpp b/src/core/tcpslavebase.cpp
--- a/src/core/tcpslavebase.cpp
+++ b/src/core/tcpslavebase.cpp
@@ -26,7 +26,6 @@
 
 #include "tcpslavebase.h"
 #include "kiocoredebug.h"
-#include "ksslerror_p.h"
 
 #include <kconfiggroup.h>
 #include <ksslcertificatemanager.h>
@@ -107,9 +106,9 @@
         QString errorStr;
         // encode the two-dimensional numeric error list using '\n' and '\t' as outer and inner separators
         for (const QSslCertificate &cert : peerCertificateChain ) {
-            for (const KSslError &error : qAsConst(sslErrors)) {
+            for (const QSslError &error : qAsConst(sslErrors)) {
                 if (error.certificate() == cert) {
-                    errorStr += QString::number(static_cast<int>(KSslErrorPrivate::errorFromKSslError(error.error()))) + QLatin1Char('\t');
+                    errorStr += QString::number(static_cast<int>(error.error())) + QLatin1Char('\t');
                 }
             }
             if (errorStr.endsWith(QLatin1Char('\t'))) {