diff --git a/src/libs/utils/reloadpromptutils.cpp b/src/libs/utils/reloadpromptutils.cpp
index af59d17fc61..9e0b59f3783 100644
--- a/src/libs/utils/reloadpromptutils.cpp
+++ b/src/libs/utils/reloadpromptutils.cpp
@@ -38,7 +38,7 @@
 
 namespace Utils {
 
-QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const QString &fileName,
+QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const FileName &fileName,
                                                        bool modified,
                                                        QWidget *parent)
 {
@@ -54,8 +54,8 @@ QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const QString &fileName,
         msg = QCoreApplication::translate("Utils::reloadPrompt",
                 "The file <i>%1</i> has changed outside Qt Creator. Do you want to reload it?");
     }
-    msg = msg.arg(FileName::fromString(fileName).fileName());
-    return reloadPrompt(title, msg, QDir::toNativeSeparators(fileName), parent);
+    msg = msg.arg(fileName.fileName());
+    return reloadPrompt(title, msg, fileName.toUserOutput(), parent);
 }
 
 QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const QString &title,
diff --git a/src/libs/utils/reloadpromptutils.h b/src/libs/utils/reloadpromptutils.h
index 8008f45cca3..0810b76794d 100644
--- a/src/libs/utils/reloadpromptutils.h
+++ b/src/libs/utils/reloadpromptutils.h
@@ -39,6 +39,7 @@ class QWidget;
 QT_END_NAMESPACE
 
 namespace Utils {
+class FileName;
 
 enum ReloadPromptAnswer {
     ReloadCurrent,
@@ -48,7 +49,7 @@ enum ReloadPromptAnswer {
     CloseCurrent
 };
 
-QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const QString &fileName,
+QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const FileName &fileName,
                                                        bool modified,
                                                        QWidget *parent);
 QTCREATOR_UTILS_EXPORT ReloadPromptAnswer reloadPrompt(const QString &title,
diff --git a/src/plugins/coreplugin/documentmanager.cpp b/src/plugins/coreplugin/documentmanager.cpp
index 87641980c8f..51445d176da 100644
--- a/src/plugins/coreplugin/documentmanager.cpp
+++ b/src/plugins/coreplugin/documentmanager.cpp
@@ -1064,7 +1064,7 @@ void DocumentManager::checkForReload()
                     success = document->reload(&errorString, IDocument::FlagReload, IDocument::TypeContents);
                 } else {
                     // Ask about content change
-                    previousReloadAnswer = Utils::reloadPrompt(document->filePath().toString(), document->isModified(),
+                    previousReloadAnswer = Utils::reloadPrompt(document->filePath(), document->isModified(),
                                                                ICore::dialogParent());
                     switch (previousReloadAnswer) {
                     case Utils::ReloadAll: