diff --git a/src/plugins/qt4projectmanager/qt-s60/abldparser.cpp b/src/plugins/qt4projectmanager/qt-s60/abldparser.cpp
index b2e6000f4583b97fc3c96e566f010ea65f9626b8..bddaeafc4f32eeeefb78e3f230470bcbee032033 100644
--- a/src/plugins/qt4projectmanager/qt-s60/abldparser.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/abldparser.cpp
@@ -54,7 +54,7 @@ void AbldParser::stdOutput(const QString &line)
 
     QString lne = line.trimmed();
     // possible ABLD.bat errors:
-    if (lne.startsWith("Is Perl, version ")) {
+    if (lne.startsWith(QLatin1String("Is Perl, version "))) {
         emit addTask(TaskWindow::Task(TaskWindow::Error,
                                       lne /* description */,
                                       QString() /* filename */,
@@ -62,7 +62,7 @@ void AbldParser::stdOutput(const QString &line)
                                       TASK_CATEGORY_BUILDSYSTEM));
         return;
     }
-    if (lne.startsWith("FATAL ERROR:")) {
+    if (lne.startsWith(QLatin1String("FATAL ERROR:"))) {
         emit addTask(TaskWindow::Task(TaskWindow::Error,
                                       lne /* description */,
                                       QString() /* filename */,
@@ -114,9 +114,9 @@ void AbldParser::stdError(const QString &line)
     QString lne = line.trimmed();
 
     // possible abld.pl errors:
-    if (lne.startsWith("ABLD ERROR:") ||
-        lne.startsWith("This project does not support ") ||
-        lne.startsWith("Platform ")) {
+    if (lne.startsWith(QLatin1String("ABLD ERROR:")) ||
+        lne.startsWith(QLatin1String("This project does not support ")) ||
+        lne.startsWith(QLatin1String("Platform "))) {
         emit addTask(TaskWindow::Task(TaskWindow::Error,
                                       lne /* description */,
                                       QString() /* filename */,
@@ -125,7 +125,7 @@ void AbldParser::stdError(const QString &line)
         return;
     }
 
-    if (lne.startsWith("Died at ")) {
+    if (lne.startsWith(QLatin1String("Died at "))) {
         emit addTask(TaskWindow::Task(TaskWindow::Error,
                                       lne /* description */,
                                       QString() /* filename */,
@@ -135,7 +135,7 @@ void AbldParser::stdError(const QString &line)
         return;
     }
 
-    if (lne.startsWith("MMPFILE \"")) {
+    if (lne.startsWith(QLatin1String("MMPFILE \""))) {
         m_currentFile = lne.mid(9, lne.size() - 10);
         m_waitingForStdErrContinuation = false;
         return;
@@ -144,7 +144,7 @@ void AbldParser::stdError(const QString &line)
         m_waitingForStdErrContinuation = false;
         return;
     }
-    if (lne.startsWith("WARNING: ")) {
+    if (lne.startsWith(QLatin1String("WARNING: "))) {
         QString description = lne.mid(9);
         emit addTask(TaskWindow::Task(TaskWindow::Warning, description,
                                       m_currentFile,
@@ -153,7 +153,7 @@ void AbldParser::stdError(const QString &line)
         m_waitingForStdErrContinuation = true;
         return;
     }
-    if (lne.startsWith("ERROR: ")) {
+    if (lne.startsWith(QLatin1String("ERROR: "))) {
         QString description = lne.mid(7);
         emit addTask(TaskWindow::Task(TaskWindow::Error, description,
                                       m_currentFile,
diff --git a/src/plugins/qt4projectmanager/qt-s60/winscwparser.cpp b/src/plugins/qt4projectmanager/qt-s60/winscwparser.cpp
index ba01ac7b93485fe39db4a2b05045096c7838fb32..34ed4c19474ddfdcff6aa270e2f3e46f5b11ecce 100644
--- a/src/plugins/qt4projectmanager/qt-s60/winscwparser.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/winscwparser.cpp
@@ -56,7 +56,7 @@ void WinscwParser::stdOutput(const QString &line)
                               m_compilerProblem.cap(1) /* filename */,
                               m_compilerProblem.cap(2).toInt() /* linenumber */,
                               TASK_CATEGORY_COMPILE);
-        if (task.description.startsWith("warning: ")) {
+        if (task.description.startsWith(QLatin1String("warning: "))) {
             task.type = TaskWindow::Warning;
             task.description = task.description.mid(9);
         }