diff --git a/src/plugins/coreplugin/corejsextensions.cpp b/src/plugins/coreplugin/corejsextensions.cpp
index 199b960893a..3d78a74da12 100644
--- a/src/plugins/coreplugin/corejsextensions.cpp
+++ b/src/plugins/coreplugin/corejsextensions.cpp
@@ -87,6 +87,11 @@ QString UtilsJsExtension::absoluteFilePath(const QString &in) const
     return fi.absoluteFilePath();
 }
 
+QString UtilsJsExtension::relativeFilePath(const QString &path, const QString &base) const
+{
+    return QDir(base).relativeFilePath(path);
+}
+
 bool UtilsJsExtension::exists(const QString &in) const
 {
     return QFileInfo::exists(in);
diff --git a/src/plugins/coreplugin/corejsextensions.h b/src/plugins/coreplugin/corejsextensions.h
index 0f6ed1273cc..3ac04bf38f0 100644
--- a/src/plugins/coreplugin/corejsextensions.h
+++ b/src/plugins/coreplugin/corejsextensions.h
@@ -58,6 +58,8 @@ public:
     Q_INVOKABLE QString path(const QString &in) const;
     Q_INVOKABLE QString absoluteFilePath(const QString &in) const;
 
+    Q_INVOKABLE QString relativeFilePath(const QString &path, const QString &base) const;
+
     // File checks:
     Q_INVOKABLE bool exists(const QString &in) const;
     Q_INVOKABLE bool isDirectory(const QString &in) const;