diff --git a/src/libs/utils/fileutils.cpp b/src/libs/utils/fileutils.cpp
index a476cd8d892..411dbf777d9 100644
--- a/src/libs/utils/fileutils.cpp
+++ b/src/libs/utils/fileutils.cpp
@@ -654,7 +654,7 @@ FileName FileName::fromString(const QString &filename)
 /// Constructs a FileName from \a fileName. The \a defaultExtension is appended
 /// to \a filename if that does not have an extension already.
 /// \a fileName is not checked for validity.
-FileName FileName::fromString(const QString &filename, const QString &defaultExtension)
+FileName FileName::fromStringWithExtension(const QString &filename, const QString &defaultExtension)
 {
     if (filename.isEmpty() || defaultExtension.isEmpty())
         return filename;
diff --git a/src/libs/utils/fileutils.h b/src/libs/utils/fileutils.h
index aa6310c7601..00278a55a19 100644
--- a/src/libs/utils/fileutils.h
+++ b/src/libs/utils/fileutils.h
@@ -67,7 +67,7 @@ public:
     explicit FileName(const QFileInfo &info);
     QFileInfo toFileInfo() const;
     static FileName fromString(const QString &filename);
-    static FileName fromString(const QString &filename, const QString &defaultExtension);
+    static FileName fromStringWithExtension(const QString &filename, const QString &defaultExtension);
     static FileName fromLatin1(const QByteArray &filename);
     static FileName fromUserInput(const QString &filename);
     static FileName fromUtf8(const char *filename, int filenameSize = -1);
diff --git a/src/plugins/coreplugin/corejsextensions.cpp b/src/plugins/coreplugin/corejsextensions.cpp
index 7398d60a944..02e66016407 100644
--- a/src/plugins/coreplugin/corejsextensions.cpp
+++ b/src/plugins/coreplugin/corejsextensions.cpp
@@ -118,7 +118,7 @@ QString UtilsJsExtension::preferredSuffix(const QString &mimetype) const
 
 QString UtilsJsExtension::fileName(const QString &path, const QString &extension) const
 {
-    return Utils::FileName::fromString(path, extension).toString();
+    return Utils::FileName::fromStringWithExtension(path, extension).toString();
 }
 
 QString UtilsJsExtension::mktemp(const QString &pattern) const
diff --git a/src/plugins/cpptools/cpptoolsjsextension.cpp b/src/plugins/cpptools/cpptoolsjsextension.cpp
index d5efc1db6d6..2d3b7f01ea4 100644
--- a/src/plugins/cpptools/cpptoolsjsextension.cpp
+++ b/src/plugins/cpptools/cpptoolsjsextension.cpp
@@ -45,7 +45,7 @@ QString CppToolsJsExtension::headerGuard(const QString &in) const
 
 QString CppToolsJsExtension::fileName(const QString &path, const QString &extension) const
 {
-    QString raw = Utils::FileName::fromString(path, extension).toString();
+    QString raw = Utils::FileName::fromStringWithExtension(path, extension).toString();
     CppFileSettings settings;
     settings.fromSettings(Core::ICore::settings());
     if (!settings.lowerCaseFiles)