diff --git a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
index 7c1d217c32e..044b5680c25 100644
--- a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
@@ -146,9 +146,11 @@ bool Qt4RunConfiguration::isEnabled() const
 QString Qt4RunConfiguration::disabledReason() const
 {
     if (m_parseInProgress)
-        return tr("The .pro file '%1' is currently being parsed.").arg(QFileInfo(m_proFilePath).fileName());
+        return tr("The .pro file '%1' is currently being parsed.")
+                .arg(QFileInfo(m_proFilePath).fileName());
+
     if (!m_parseSuccess)
-        return tr("The .pro file '%1' could not be parsed.").arg(QFileInfo(m_proFilePath).fileName());
+        return qt4Target()->qt4Project()->disabledReasonForRunConfiguration(m_proFilePath);
     return QString();
 }
 
diff --git a/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp b/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp
index 79469a3045f..70d9a978d31 100644
--- a/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp
@@ -142,8 +142,7 @@ QString S60DeviceRunConfiguration::disabledReason() const
         return tr("The .pro file '%1' is currently being parsed.")
                 .arg(QFileInfo(m_proFilePath).fileName());
     if (!m_validParse)
-        return tr("The .pro file '%1' could not be parsed.")
-                .arg(QFileInfo(m_proFilePath).fileName());
+        return qt4Target()->qt4Project()->disabledReasonForRunConfiguration(m_proFilePath);
     return QString();
 }
 
diff --git a/src/plugins/qt4projectmanager/qt4project.cpp b/src/plugins/qt4projectmanager/qt4project.cpp
index 4c6d7d0448b..e8be9ce3a7d 100644
--- a/src/plugins/qt4projectmanager/qt4project.cpp
+++ b/src/plugins/qt4projectmanager/qt4project.cpp
@@ -1362,6 +1362,23 @@ void Qt4Project::configureAsExampleProject(const QStringList &platforms)
     ProjectExplorer::ProjectExplorerPlugin::instance()->requestProjectModeUpdate(this);
 }
 
+// All the Qt4 run configurations should share code.
+// This is a rather suboptimal way to do that for disabledReason()
+// but more pratical then duplicated the code everywhere
+QString Qt4Project::disabledReasonForRunConfiguration(const QString &proFilePath)
+{
+    if (!QFileInfo(proFilePath).exists())
+        return tr("The .pro file '%1' does not exist.")
+                .arg(QFileInfo(proFilePath).fileName());
+
+    if (!m_rootProjectNode->findProFileFor(proFilePath))
+        return tr("The .pro file '%1' is not part of the project.")
+                .arg(QFileInfo(proFilePath).fileName());
+
+    return tr("The .pro file '%1' could not be parsed.")
+            .arg(QFileInfo(proFilePath).fileName());
+}
+
 } // namespace Qt4ProjectManager
 
 #include "qt4project.moc"
diff --git a/src/plugins/qt4projectmanager/qt4project.h b/src/plugins/qt4projectmanager/qt4project.h
index b54518a5d18..a568aeb5b36 100644
--- a/src/plugins/qt4projectmanager/qt4project.h
+++ b/src/plugins/qt4projectmanager/qt4project.h
@@ -139,6 +139,9 @@ public:
 
     void configureAsExampleProject(const QStringList &platforms);
 
+    /// \internal
+    QString disabledReasonForRunConfiguration(const QString &proFilePath);
+
 signals:
     void proParsingDone();
     void proFileUpdated(Qt4ProjectManager::Qt4ProFileNode *node, bool, bool);
diff --git a/src/plugins/remotelinux/remotelinuxrunconfiguration.cpp b/src/plugins/remotelinux/remotelinuxrunconfiguration.cpp
index ca58efef246..03e935c8c43 100644
--- a/src/plugins/remotelinux/remotelinuxrunconfiguration.cpp
+++ b/src/plugins/remotelinux/remotelinuxrunconfiguration.cpp
@@ -162,8 +162,8 @@ bool RemoteLinuxRunConfiguration::isEnabled() const
         return false;
     }
     if (!d->validParse) {
-        d->disabledReason = tr("The .pro file '%1' could not be parsed.")
-                .arg(QFileInfo(d->proFilePath).fileName());
+        Qt4Project *project = qt4Target()->qt4Project();
+        d->disabledReason = project->disabledReasonForRunConfiguration(d->proFilePath);
         return false;
     }
     if (!activeQt4BuildConfiguration()) {