diff --git a/src/plugins/qnx/blackberryrunconfigurationfactory.cpp b/src/plugins/qnx/blackberryrunconfigurationfactory.cpp
index ed573681fba..57808a3cbec 100644
--- a/src/plugins/qnx/blackberryrunconfigurationfactory.cpp
+++ b/src/plugins/qnx/blackberryrunconfigurationfactory.cpp
@@ -41,15 +41,9 @@
 using namespace Qnx;
 using namespace Qnx::Internal;
 
-namespace {
-QString pathFromId(const Core::Id id)
+static QString pathFromId(const Core::Id id)
 {
-    QString idStr = id.toString();
-    if (idStr.startsWith(QLatin1String(Constants::QNX_BB_RUNCONFIGURATION_PREFIX)))
-        return idStr.mid(QString::fromLatin1(Constants::QNX_BB_RUNCONFIGURATION_PREFIX).size());
-
-    return QString();
-}
+    return id.suffixAfter(Constants::QNX_BB_RUNCONFIGURATION_PREFIX);
 }
 
 BlackBerryRunConfigurationFactory::BlackBerryRunConfigurationFactory(QObject *parent) :
@@ -80,7 +74,7 @@ QString BlackBerryRunConfigurationFactory::displayNameForId(const Core::Id id) c
     if (path.isEmpty())
         return QString();
 
-    if (id.toString().startsWith(QLatin1String(Constants::QNX_BB_RUNCONFIGURATION_PREFIX)))
+    if (id.name().startsWith(Constants::QNX_BB_RUNCONFIGURATION_PREFIX))
         return tr("%1 on BlackBerry Device").arg(QFileInfo(path).completeBaseName());
 
     return QString();
@@ -95,7 +89,7 @@ bool BlackBerryRunConfigurationFactory::canCreate(ProjectExplorer::Target *paren
     if (!qt4Project)
         return false;
 
-    if (!id.toString().startsWith(QLatin1String(Constants::QNX_BB_RUNCONFIGURATION_PREFIX)))
+    if (!id.name().startsWith(Constants::QNX_BB_RUNCONFIGURATION_PREFIX))
         return false;
 
     return qt4Project->hasApplicationProFile(pathFromId(id));
@@ -116,7 +110,7 @@ bool BlackBerryRunConfigurationFactory::canRestore(ProjectExplorer::Target *pare
     if (!canHandle(parent))
         return false;
 
-    return ProjectExplorer::idFromMap(map).toString().startsWith(QLatin1String(Constants::QNX_BB_RUNCONFIGURATION_PREFIX));
+    return ProjectExplorer::idFromMap(map).name().startsWith(Constants::QNX_BB_RUNCONFIGURATION_PREFIX);
 }
 
 ProjectExplorer::RunConfiguration *BlackBerryRunConfigurationFactory::restore(
diff --git a/src/plugins/qnx/qnxdeployconfigurationfactory.cpp b/src/plugins/qnx/qnxdeployconfigurationfactory.cpp
index 01e44d76d13..e84ea7552b7 100644
--- a/src/plugins/qnx/qnxdeployconfigurationfactory.cpp
+++ b/src/plugins/qnx/qnxdeployconfigurationfactory.cpp
@@ -59,7 +59,7 @@ QList<Core::Id> QnxDeployConfigurationFactory::availableCreationIds(ProjectExplo
 
 QString QnxDeployConfigurationFactory::displayNameForId(const Core::Id id) const
 {
-    if (id.toString().startsWith(QLatin1String(Constants::QNX_QNX_DEPLOYCONFIGURATION_ID)))
+    if (id.name().startsWith(Constants::QNX_QNX_DEPLOYCONFIGURATION_ID))
         return tr("Deploy to QNX Device");
 
     return QString();
@@ -67,11 +67,7 @@ QString QnxDeployConfigurationFactory::displayNameForId(const Core::Id id) const
 
 bool QnxDeployConfigurationFactory::canCreate(ProjectExplorer::Target *parent, const Core::Id id) const
 {
-    if (!canHandle(parent)
-            || !id.toString().startsWith(QLatin1String(Constants::QNX_QNX_DEPLOYCONFIGURATION_ID)))
-        return false;
-
-    return true;
+    return canHandle(parent) && id.name().startsWith(Constants::QNX_QNX_DEPLOYCONFIGURATION_ID);
 }
 
 ProjectExplorer::DeployConfiguration *QnxDeployConfigurationFactory::create(ProjectExplorer::Target *parent, const Core::Id id)
diff --git a/src/plugins/qnx/qnxrunconfigurationfactory.cpp b/src/plugins/qnx/qnxrunconfigurationfactory.cpp
index 37f997628af..1459f591e2f 100644
--- a/src/plugins/qnx/qnxrunconfigurationfactory.cpp
+++ b/src/plugins/qnx/qnxrunconfigurationfactory.cpp
@@ -42,15 +42,9 @@
 using namespace Qnx;
 using namespace Qnx::Internal;
 
-namespace {
-QString pathFromId(const Core::Id id)
+static QString pathFromId(const Core::Id id)
 {
-    const QString idStr = id.toString();
-    if (idStr.startsWith(QLatin1String(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX)))
-        return idStr.mid(QString::fromLatin1(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX).size());
-
-    return QString();
-}
+    return id.suffixAfter(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX);
 }
 
 QnxRunConfigurationFactory::QnxRunConfigurationFactory(QObject *parent) :
@@ -80,7 +74,7 @@ QString QnxRunConfigurationFactory::displayNameForId(const Core::Id id) const
     if (path.isEmpty())
         return QString();
 
-    if (id.toString().startsWith(QLatin1String(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX)))
+    if (id.name().startsWith(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX))
         return tr("%1 on QNX Device").arg(QFileInfo(path).completeBaseName());
 
     return QString();
@@ -103,7 +97,7 @@ ProjectExplorer::RunConfiguration *QnxRunConfigurationFactory::create(ProjectExp
     if (!canCreate(parent, id))
         return 0;
 
-    if (id.toString().startsWith(QLatin1String(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX)))
+    if (id.name().startsWith(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX))
         return new QnxRunConfiguration(parent, id, pathFromId(id));
 
     return 0;
@@ -111,10 +105,8 @@ ProjectExplorer::RunConfiguration *QnxRunConfigurationFactory::create(ProjectExp
 
 bool QnxRunConfigurationFactory::canRestore(ProjectExplorer::Target *parent, const QVariantMap &map) const
 {
-    if (!canHandle(parent))
-        return false;
-
-    return ProjectExplorer::idFromMap(map).toString().startsWith(QLatin1String(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX));
+    return canHandle(parent)
+            && ProjectExplorer::idFromMap(map).name().startsWith(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX);
 }
 
 ProjectExplorer::RunConfiguration *QnxRunConfigurationFactory::restore(ProjectExplorer::Target *parent, const QVariantMap &map)
diff --git a/src/plugins/qnx/qnxruncontrolfactory.cpp b/src/plugins/qnx/qnxruncontrolfactory.cpp
index c3899b5cbe2..b2ef1489f83 100644
--- a/src/plugins/qnx/qnxruncontrolfactory.cpp
+++ b/src/plugins/qnx/qnxruncontrolfactory.cpp
@@ -97,7 +97,7 @@ bool QnxRunControlFactory::canRun(RunConfiguration *runConfiguration, RunMode mo
         return false;
 
     if (!runConfiguration->isEnabled()
-            || !runConfiguration->id().toString().startsWith(QLatin1String(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX))) {
+            || !runConfiguration->id().name().startsWith(Constants::QNX_QNX_RUNCONFIGURATION_PREFIX)) {
         return false;
     }