diff --git a/plugins/problemreporter/problemhighlighter.cpp b/plugins/problemreporter/problemhighlighter.cpp
index cab75ffa9..2b8f90b58 100644
--- a/plugins/problemreporter/problemhighlighter.cpp
+++ b/plugins/problemreporter/problemhighlighter.cpp
@@ -1,205 +1,201 @@
 /*
  * KDevelop Problem Reporter
  *
  * Copyright 2008 Hamish Rodda <rodda@kde.org>
  * Copyright 2008-2009 David Nolden <david.nolden.kdevelop@art-master.de>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
  * License along with this program; if not, write to the
  * Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #include "problemhighlighter.h"
 
 #include <KTextEditor/Document>
 #include <KTextEditor/MarkInterface>
 #include <ktexteditor/view.h>
 #include <ktexteditor/movinginterface.h>
 
 #include <serialization/indexedstring.h>
 #include <language/duchain/navigation/abstractnavigationwidget.h>
 #include <language/util/navigationtooltip.h>
 #include <interfaces/icore.h>
 #include <interfaces/ilanguagecontroller.h>
 #include <interfaces/icompletionsettings.h>
 #include <language/duchain/duchainlock.h>
 #include <language/duchain/duchainutils.h>
 #include <language/duchain/topducontext.h>
 #include <language/duchain/navigation/problemnavigationcontext.h>
 #include <util/texteditorhelpers.h>
 
 #include <kcolorscheme.h>
 
 #include <shell/problem.h>
 
 using namespace KTextEditor;
 using namespace KDevelop;
 
 namespace
 {
 
 QColor colorForSeverity(IProblem::Severity severity)
 {
     KColorScheme scheme(QPalette::Active);
     switch (severity) {
     case IProblem::Error:
         return scheme.foreground(KColorScheme::NegativeText).color();
     case IProblem::Warning:
         return scheme.foreground(KColorScheme::NeutralText).color();
     case IProblem::Hint:
     default:
         return scheme.foreground(KColorScheme::PositiveText).color();
     }
 }
 }
 
 ProblemHighlighter::ProblemHighlighter(KTextEditor::Document* document)
     : m_document(document)
 {
     Q_ASSERT(m_document);
 
     connect(ICore::self()->languageController()->completionSettings(), &ICompletionSettings::settingsChanged, this,
             &ProblemHighlighter::settingsChanged);
     connect(m_document.data(), &Document::aboutToReload, this, &ProblemHighlighter::clearProblems);
     if (qobject_cast<MovingInterface*>(m_document)) {
         // can't use new signal/slot syntax here, MovingInterface is not a QObject
         connect(m_document, SIGNAL(aboutToInvalidateMovingInterfaceContent(KTextEditor::Document*)), this,
                 SLOT(clearProblems()));
     }
     connect(m_document, SIGNAL(aboutToRemoveText(KTextEditor::Range)), this,
             SLOT(aboutToRemoveText(KTextEditor::Range)));
 }
 
 void ProblemHighlighter::settingsChanged()
 {
     // Re-highlight
     setProblems(m_problems);
 }
 
 ProblemHighlighter::~ProblemHighlighter()
 {
     if (m_topHLRanges.isEmpty() || !m_document)
         return;
 
     qDeleteAll(m_topHLRanges);
 }
 
 void ProblemHighlighter::setProblems(const QVector<IProblem::Ptr>& problems)
 {
     if (!m_document)
         return;
 
     const bool hadProblems = !m_problems.isEmpty();
     m_problems = problems;
 
     qDeleteAll(m_topHLRanges);
     m_topHLRanges.clear();
-    m_problemsForRanges.clear();
 
     IndexedString url(m_document->url());
 
     /// TODO: create a better MarkInterface that makes it possible to add the marks to the scrollbar
     ///      but having no background.
     ///      also make it nicer together with other plugins, this would currently fail with
     ///      this method...
     const uint errorMarkType = KTextEditor::MarkInterface::Error;
     const uint warningMarkType = KTextEditor::MarkInterface::Warning;
     KTextEditor::MarkInterface* markIface = dynamic_cast<KTextEditor::MarkInterface*>(m_document.data());
     if (markIface && hadProblems) {
         // clear previously added marks
         foreach (KTextEditor::Mark* mark, markIface->marks()) {
             if (mark->type == errorMarkType || mark->type == warningMarkType) {
                 markIface->removeMark(mark->line, mark->type);
             }
         }
     }
 
     if (problems.isEmpty()) {
         return;
     }
 
     DUChainReadLocker lock;
 
     TopDUContext* top = DUChainUtils::standardContextForUrl(m_document->url());
 
     KTextEditor::MovingInterface* iface = dynamic_cast<KTextEditor::MovingInterface*>(m_document.data());
     Q_ASSERT(iface);
 
     foreach (const IProblem::Ptr& problem, problems) {
         if (problem->finalLocation().document != url || !problem->finalLocation().isValid())
             continue;
 
         KTextEditor::Range range;
         if (top)
             range = top->transformFromLocalRevision(RangeInRevision::castFromSimpleRange(problem->finalLocation()));
         else
             range = problem->finalLocation();
 
         if (range.end().line() >= m_document->lines())
             range.end() = KTextEditor::Cursor(m_document->endOfLine(m_document->lines() - 1));
 
         if (range.isEmpty()) {
             range.setEnd(range.end() + KTextEditor::Cursor(0, 1));
         }
 
         KTextEditor::MovingRange* problemRange = iface->newMovingRange(range);
-
-        m_problemsForRanges.insert(problemRange, problem);
         m_topHLRanges.append(problemRange);
 
         if (problem->source() != IProblem::ToDo
             && (problem->severity() != IProblem::Hint
                 || ICore::self()->languageController()->completionSettings()->highlightSemanticProblems())) {
             KTextEditor::Attribute::Ptr attribute(new KTextEditor::Attribute());
             attribute->setUnderlineStyle(QTextCharFormat::WaveUnderline);
             attribute->setUnderlineColor(colorForSeverity(problem->severity()));
             problemRange->setAttribute(attribute);
         }
 
         if (markIface && ICore::self()->languageController()->completionSettings()->highlightProblematicLines()) {
             uint mark;
             if (problem->severity() == IProblem::Error) {
                 mark = errorMarkType;
             } else if (problem->severity() == IProblem::Warning) {
                 mark = warningMarkType;
             } else {
                 continue;
             }
             markIface->addMark(problem->finalLocation().start().line(), mark);
         }
     }
 }
 
 void ProblemHighlighter::aboutToRemoveText(const KTextEditor::Range& range)
 {
     if (range.onSingleLine()) { // no need to optimize this
         return;
     }
 
     QList<MovingRange*>::iterator it = m_topHLRanges.begin();
     while (it != m_topHLRanges.end()) {
         if (range.contains((*it)->toRange())) {
-            m_problemsForRanges.remove(*it);
             delete (*it);
             it = m_topHLRanges.erase(it);
         } else {
             ++it;
         }
     }
 }
 
 void ProblemHighlighter::clearProblems()
 {
     setProblems({});
 }
diff --git a/plugins/problemreporter/problemhighlighter.h b/plugins/problemreporter/problemhighlighter.h
index 6026818b6..97dde7a2e 100644
--- a/plugins/problemreporter/problemhighlighter.h
+++ b/plugins/problemreporter/problemhighlighter.h
@@ -1,54 +1,53 @@
 /*
  * KDevelop Problem Reporter
  *
  * Copyright 2008 Hamish Rodda <rodda@kde.org>
  * Copyright 2008-2009 David Nolden <david.nolden.kdevelop@art-master.de>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
  * License along with this program; if not, write to the
  * Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #ifndef KDEVPLATFORM_PLUGIN_PROBLEM_HIGHLIGHT_H
 #define KDEVPLATFORM_PLUGIN_PROBLEM_HIGHLIGHT_H
 
 #include <language/duchain/problem.h>
 #include <qpointer.h>
 #include <ktexteditor/movingrange.h>
 #include <interfaces/iproblem.h>
 
 class ProblemHighlighter : public QObject
 {
     Q_OBJECT
 public:
     explicit ProblemHighlighter(KTextEditor::Document* document);
     ~ProblemHighlighter() override;
 
     void setProblems(const QVector<KDevelop::IProblem::Ptr>& problems);
 
 private slots:
     void aboutToRemoveText(const KTextEditor::Range& range);
     void clearProblems();
 
 private:
     QPointer<KTextEditor::Document> m_document;
     QList<KTextEditor::MovingRange*> m_topHLRanges;
     QVector<KDevelop::IProblem::Ptr> m_problems;
-    QMap<KTextEditor::MovingRange*, KDevelop::IProblem::Ptr> m_problemsForRanges;
 
 public slots:
     void settingsChanged();
 };
 
 #endif // KDEVPLATFORM_PLUGIN_PROBLEM_HIGHLIGHT_H