diff --git a/src/plugins/clangcodemodel/pchmanager.cpp b/src/plugins/clangcodemodel/pchmanager.cpp
index 2702ecd60fd..280dde4c6be 100644
--- a/src/plugins/clangcodemodel/pchmanager.cpp
+++ b/src/plugins/clangcodemodel/pchmanager.cpp
@@ -322,7 +322,7 @@ void PchManager::doPchInfoUpdateFuzzy(QFutureInterface<void> &future,
                 getPrefixFileKind(objc.value(pch, false), cplusplus.value(pch, false));
 
         QStringList options = Utils::createClangOptions(projectPart, prefixFileKind);
-        projectPart.reset();
+        projectPart.clear();
 
         PchManager *pchManager = PchManager::instance();
         PchInfo::Ptr pchInfo = pchManager->findMatchingPCH(pch, options, true);
diff --git a/src/plugins/clangcodemodel/test/clangcompletion_test.cpp b/src/plugins/clangcodemodel/test/clangcompletion_test.cpp
index c9f3bc82179..9368cecb892 100644
--- a/src/plugins/clangcodemodel/test/clangcompletion_test.cpp
+++ b/src/plugins/clangcodemodel/test/clangcompletion_test.cpp
@@ -302,7 +302,7 @@ void ClangCodeModelPlugin::test_ObjC_hints()
             QVERIFY2(hint == ccr.hint(), hintError.arg(ccr.hint()).toAscii());
         }
         const QString textError(QString::fromLatin1("Text '%1' not found in set %2")
-                                .arg(text).arg(texts.join(QLatin1Char(','))));
+                                .arg(text).arg(texts.join(QLatin1String(","))));
         QVERIFY2(hasText, textError.toAscii());
     }
 }