diff --git a/src/plugins/cppeditor/cppmodelmanager.cpp b/src/plugins/cppeditor/cppmodelmanager.cpp
index 1f22b3e08bd..93d830df6ee 100644
--- a/src/plugins/cppeditor/cppmodelmanager.cpp
+++ b/src/plugins/cppeditor/cppmodelmanager.cpp
@@ -1238,7 +1238,6 @@ static QSet<QString> filteredFilesRemoved(const QSet<QString> &files, int fileSi
         return files;
 
     QSet<QString> result;
-    QFileInfo fileInfo;
     QList<QRegularExpression> regexes;
     const QStringList wildcards = ignorePattern.split('\n');
 
@@ -1246,19 +1245,19 @@ static QSet<QString> filteredFilesRemoved(const QSet<QString> &files, int fileSi
         regexes.append(QRegularExpression::fromWildcard(wildcard, Qt::CaseInsensitive,
                                                         QRegularExpression::UnanchoredWildcardConversion));
 
-    for (const QString &filePath : files) {
-        fileInfo.setFile(filePath);
-        if (fileSizeLimitInMb > 0 && fileSizeExceedsLimit(fileInfo, fileSizeLimitInMb))
+    for (const QString &file : files) {
+        const FilePath filePath = FilePath::fromString(file);
+        if (fileSizeLimitInMb > 0 && fileSizeExceedsLimit(filePath, fileSizeLimitInMb))
             continue;
         bool skip = false;
         if (ignoreFiles) {
             for (const QRegularExpression &rx: std::as_const(regexes)) {
-                QRegularExpressionMatch match = rx.match(fileInfo.absoluteFilePath());
+                QRegularExpressionMatch match = rx.match(filePath.absoluteFilePath().path());
                 if (match.hasMatch()) {
                     const QString msg = QCoreApplication::translate(
                                 "CppIndexer",
                                 "C++ Indexer: Skipping file \"%1\" because its path matches the ignore pattern.")
-                                    .arg(filePath);
+                                    .arg(filePath.displayName());
                     QMetaObject::invokeMethod(Core::MessageManager::instance(),
                                               [msg]() { Core::MessageManager::writeSilently(msg); });
                     skip = true;
@@ -1268,7 +1267,7 @@ static QSet<QString> filteredFilesRemoved(const QSet<QString> &files, int fileSi
         }
 
         if (!skip)
-            result << filePath;
+            result << filePath.toString();
     }
 
     return result;
diff --git a/src/plugins/cppeditor/cppsourceprocessor.cpp b/src/plugins/cppeditor/cppsourceprocessor.cpp
index df34da8edfd..97537b5e3c8 100644
--- a/src/plugins/cppeditor/cppsourceprocessor.cpp
+++ b/src/plugins/cppeditor/cppsourceprocessor.cpp
@@ -422,8 +422,7 @@ void CppSourceProcessor::sourceNeeded(int line, const FilePath &filePath, Includ
         return;
     }
 
-    const QFileInfo info = absoluteFilePath.toFileInfo();
-    if (fileSizeExceedsLimit(info, m_fileSizeLimitInMb))
+    if (fileSizeExceedsLimit(absoluteFilePath, m_fileSizeLimitInMb))
         return; // TODO: Add diagnostic message
 
     // Otherwise get file contents
@@ -445,8 +444,8 @@ void CppSourceProcessor::sourceNeeded(int line, const FilePath &filePath, Includ
         Document::Include inc(include.toString(), include, 0, IncludeLocal);
         document->addIncludeFile(inc);
     }
-    if (info.exists())
-        document->setLastModified(info.lastModified());
+    if (absoluteFilePath.exists())
+        document->setLastModified(absoluteFilePath.lastModified());
 
     const Document::Ptr previousDocument = switchCurrentDocument(document);
     const QByteArray preprocessedCode = m_preprocess.run(absoluteFilePath, contents);
diff --git a/src/plugins/cppeditor/cpptoolsreuse.cpp b/src/plugins/cppeditor/cpptoolsreuse.cpp
index dc10449d210..247c8faccff 100644
--- a/src/plugins/cppeditor/cpptoolsreuse.cpp
+++ b/src/plugins/cppeditor/cpptoolsreuse.cpp
@@ -39,6 +39,7 @@
 #include <QTextDocument>
 
 using namespace CPlusPlus;
+using namespace Utils;
 
 namespace CppEditor {
 
@@ -336,18 +337,17 @@ int indexerFileSizeLimitInMb()
     return -1;
 }
 
-bool fileSizeExceedsLimit(const QFileInfo &fileInfo, int sizeLimitInMb)
+bool fileSizeExceedsLimit(const FilePath &filePath, int sizeLimitInMb)
 {
     if (sizeLimitInMb <= 0)
         return false;
 
-    const qint64 fileSizeInMB = fileInfo.size() / (1000 * 1000);
+    const qint64 fileSizeInMB = filePath.fileSize() / (1000 * 1000);
     if (fileSizeInMB > sizeLimitInMb) {
-        const QString absoluteFilePath = fileInfo.absoluteFilePath();
         const QString msg = QCoreApplication::translate(
                     "CppIndexer",
                     "C++ Indexer: Skipping file \"%1\" because it is too big.")
-                        .arg(absoluteFilePath);
+                        .arg(filePath.displayName());
 
         QMetaObject::invokeMethod(Core::MessageManager::instance(),
                                   [msg]() { Core::MessageManager::writeSilently(msg); });
diff --git a/src/plugins/cppeditor/cpptoolsreuse.h b/src/plugins/cppeditor/cpptoolsreuse.h
index 67abc2258af..06eba69c697 100644
--- a/src/plugins/cppeditor/cpptoolsreuse.h
+++ b/src/plugins/cppeditor/cpptoolsreuse.h
@@ -16,12 +16,6 @@
 #include <cplusplus/CppDocument.h>
 #include <cplusplus/Token.h>
 
-QT_BEGIN_NAMESPACE
-class QChar;
-class QFileInfo;
-class QTextCursor;
-QT_END_NAMESPACE
-
 namespace CPlusPlus {
 class Macro;
 class Symbol;
@@ -31,6 +25,7 @@ class LookupContext;
 namespace TextEditor { class AssistInterface; }
 
 namespace CppEditor {
+
 class CppRefactoringFile;
 class ProjectInfo;
 class CppCompletionAssistProcessor;
@@ -75,7 +70,7 @@ bool CPPEDITOR_EXPORT preferLowerCaseFileNames();
 UsePrecompiledHeaders CPPEDITOR_EXPORT getPchUsage();
 
 int indexerFileSizeLimitInMb();
-bool fileSizeExceedsLimit(const QFileInfo &fileInfo, int sizeLimitInMb);
+bool fileSizeExceedsLimit(const Utils::FilePath &filePath, int sizeLimitInMb);
 
 ProjectExplorer::Project CPPEDITOR_EXPORT *projectForProjectInfo(const ProjectInfo &info);
 ProjectExplorer::Project CPPEDITOR_EXPORT *projectForProjectPart(const ProjectPart &part);