diff --git a/doc/installerfw.qdoc b/doc/installerfw.qdoc
index af1089d1..c8a09445 100644
--- a/doc/installerfw.qdoc
+++ b/doc/installerfw.qdoc
@@ -321,6 +321,9 @@
             \li Set to \c true if you want to add an extra column into component tree showing install actions.
                 This extra column indicates whether a component is going to be installed or uninstalled,
                 or just stay installed or uninstalled.
+        \row
+            \li SupportsModify
+            \li Set to \c false if the product does not support modifying an existing installation.
 
     \endtable
 
diff --git a/src/libs/installer/constants.h b/src/libs/installer/constants.h
index b871e620..012d0cc5 100644
--- a/src/libs/installer/constants.h
+++ b/src/libs/installer/constants.h
@@ -92,6 +92,7 @@ static const QLatin1String scWizardDefaultHeight("WizardDefaultHeight");
 static const QLatin1String scUrlQueryString("UrlQueryString");
 static const QLatin1String scProductUUID("ProductUUID");
 static const QLatin1String scAllUsers("AllUsers");
+static const QLatin1String scSupportsModify("SupportsModify");
 
 const char scRelocatable[] = "@RELOCATABLE_PATH@";
 
diff --git a/src/libs/installer/packagemanagercore_p.cpp b/src/libs/installer/packagemanagercore_p.cpp
index 76294ec6..019bbfe7 100644
--- a/src/libs/installer/packagemanagercore_p.cpp
+++ b/src/libs/installer/packagemanagercore_p.cpp
@@ -2035,7 +2035,13 @@ void PackageManagerCorePrivate::registerMaintenanceTool()
     const quint64 limit = std::numeric_limits<quint32>::max(); // maximum 32 bit value
     if (estimatedSizeKB <= limit)
         settings.setValue(QLatin1String("EstimatedSize"), static_cast<quint32>(estimatedSizeKB));
-    settings.setValue(QLatin1String("NoModify"), 0);
+
+    const bool supportsModify = m_core->value(scSupportsModify, scTrue) == scTrue;
+    if (supportsModify)
+        settings.setValue(QLatin1String("NoModify"), 0);
+    else
+        settings.setValue(QLatin1String("NoModify"), 1);
+
     settings.setValue(QLatin1String("NoRepair"), 1);
 #endif
 }
diff --git a/src/libs/installer/settings.cpp b/src/libs/installer/settings.cpp
index 3e933574..f849404f 100644
--- a/src/libs/installer/settings.cpp
+++ b/src/libs/installer/settings.cpp
@@ -261,7 +261,7 @@ Settings Settings::fromFileAndPrefix(const QString &path, const QString &prefix,
                 << scWizardDefaultWidth << scWizardDefaultHeight
                 << scRepositorySettingsPageVisible << scTargetConfigurationFile
                 << scRemoteRepositories << scTranslations << scUrlQueryString << QLatin1String(scControlScript)
-                << scCreateLocalRepository << scInstallActionColumnVisible;
+                << scCreateLocalRepository << scInstallActionColumnVisible << scSupportsModify;
 
     Settings s;
     s.d->m_data.insert(scPrefix, prefix);
@@ -743,3 +743,8 @@ QString Settings::controlScript() const
 {
     return d->m_data.value(QLatin1String(scControlScript)).toString();
 }
+
+bool Settings::supportsModify() const
+{
+    return d->m_data.value(scSupportsModify, true).toBool();
+}
diff --git a/src/libs/installer/settings.h b/src/libs/installer/settings.h
index 6c437a72..9c0920e6 100644
--- a/src/libs/installer/settings.h
+++ b/src/libs/installer/settings.h
@@ -157,6 +157,8 @@ public:
 
     QString controlScript() const;
 
+    bool supportsModify() const;
+
 private:
     class Private;
     QSharedDataPointer<Private> d;
diff --git a/tests/auto/installer/settings/data/full_config.xml b/tests/auto/installer/settings/data/full_config.xml
index 1544961f..272a1b0d 100644
--- a/tests/auto/installer/settings/data/full_config.xml
+++ b/tests/auto/installer/settings/data/full_config.xml
@@ -57,4 +57,6 @@ File should contain all elements we allow in a config.xml
     </Translations>
 
     <ControlScript>controlscript.js</ControlScript>
+
+    <SupportsModify>true</SupportsModify>
 </Installer>
diff --git a/tests/auto/installer/settings/tst_settings.cpp b/tests/auto/installer/settings/tst_settings.cpp
index 07ff374a..fc49f4ed 100644
--- a/tests/auto/installer/settings/tst_settings.cpp
+++ b/tests/auto/installer/settings/tst_settings.cpp
@@ -90,6 +90,8 @@ void tst_Settings::loadTutorialConfig()
 
     QCOMPARE(settings.translations(), QStringList());
     QCOMPARE(settings.controlScript(), QString());
+
+    QCOMPARE(settings.supportsModify(), true);
 }
 
 void tst_Settings::loadFullConfig()