diff --git a/src/libs/utils/filepath.cpp b/src/libs/utils/filepath.cpp
index 08f26ba7af9..735c6b2fbd6 100644
--- a/src/libs/utils/filepath.cpp
+++ b/src/libs/utils/filepath.cpp
@@ -977,9 +977,7 @@ bool FilePath::operator>=(const FilePath &other) const
 
 FilePath FilePath::operator+(const QString &s) const
 {
-    FilePath res = *this;
-    res.m_path += s;
-    return res;
+    return pathAppended(s);
 }
 
 /// \returns whether FilePath is a child of \a s
diff --git a/tests/auto/utils/fileutils/tst_fileutils.cpp b/tests/auto/utils/fileutils/tst_fileutils.cpp
index b92d9996155..0e6d1d0ed22 100644
--- a/tests/auto/utils/fileutils/tst_fileutils.cpp
+++ b/tests/auto/utils/fileutils/tst_fileutils.cpp
@@ -85,6 +85,8 @@ private slots:
     void startsWithDriveLetter_data();
     void onDevice();
     void onDevice_data();
+    void plus();
+    void plus_data();
 
 private:
     QTemporaryDir tempDir;
@@ -785,5 +787,23 @@ void tst_fileutils::onDevice() {
     QCOMPARE(path.onDevice(templatePath), expected);
 }
 
+void tst_fileutils::plus_data() {
+    tst_fileutils::pathAppended_data();
+}
+
+void tst_fileutils::plus()
+{
+    QFETCH(QString, left);
+    QFETCH(QString, right);
+    QFETCH(QString, expected);
+
+    const FilePath fleft = FilePath::fromString(left);
+    const FilePath fexpected = FilePath::fromString(expected);
+
+    const FilePath result = fleft + right;
+
+    QCOMPARE(fexpected, result);
+}
+
 QTEST_GUILESS_MAIN(tst_fileutils)
 #include "tst_fileutils.moc"