diff --git a/src/plugins/cppeditor/cpphighlighter.cpp b/src/plugins/cppeditor/cpphighlighter.cpp
index cf41b6fbf01..dedd644f64b 100644
--- a/src/plugins/cppeditor/cpphighlighter.cpp
+++ b/src/plugins/cppeditor/cpphighlighter.cpp
@@ -836,7 +836,7 @@ class CodeFoldingTest : public QObject
 private slots:
     void test()
     {
-        const QByteArray content = R"(cpp // 0,0
+        const QByteArray content = R"cpp( // 0,0
 int main() {                              // 1,0
 #if 0                                     // 1,1
     if (true) {                           // 1,1
@@ -852,7 +852,7 @@ int main() {                              // 1,0
 #endif                                    // 1,1
 }                                         // 0,0
                                           // 0,0
-cpp)";
+)cpp";
         TemporaryDir temporaryDir;
         QVERIFY(temporaryDir.isValid());
         CppTestDocument testDocument("file.cpp", content);