diff --git a/src/libs/cplusplus/TypeOfExpression.cpp b/src/libs/cplusplus/TypeOfExpression.cpp
index fe9a664d18e..032443339c6 100644
--- a/src/libs/cplusplus/TypeOfExpression.cpp
+++ b/src/libs/cplusplus/TypeOfExpression.cpp
@@ -145,5 +145,5 @@ QString TypeOfExpression::preprocessedExpression(const QString &expression,
     Preprocessor preproc(0, env);
     QByteArray preprocessedCode;
     preproc("<expression>", code, &preprocessedCode);
-    return QString::fromUtf8(preprocessedCode);
+    return QString::fromUtf8(preprocessedCode.constData(), preprocessedCode.size());
 }
diff --git a/src/libs/extensionsystem/pluginmanager.cpp b/src/libs/extensionsystem/pluginmanager.cpp
index 5a1c8a00e6a..7f523ad277f 100644
--- a/src/libs/extensionsystem/pluginmanager.cpp
+++ b/src/libs/extensionsystem/pluginmanager.cpp
@@ -459,7 +459,8 @@ bool PluginManager::runningTests() const
  */
 QString PluginManager::testDataDirectory() const
 {
-    QString s = QString::fromLocal8Bit(qgetenv("IDETESTDIR"));
+    QByteArray ba = qgetenv("IDETESTDIR");
+    QString s = QString::fromLocal8Bit(ba.constData(), ba.size());
     if (s.isEmpty()) {
         s = IDE_TEST_DIR;
         s.append("/tests");