diff --git a/src/plugins/projectexplorer/kitinformation.cpp b/src/plugins/projectexplorer/kitinformation.cpp
index 7edea286133e7cd57300dfb221eb149925ad3b4f..fac599641c5abb8c39dfac3a74cda28f2edd32ad 100644
--- a/src/plugins/projectexplorer/kitinformation.cpp
+++ b/src/plugins/projectexplorer/kitinformation.cpp
@@ -395,6 +395,7 @@ void DeviceKitInformation::fix(Kit *k)
     if (!dev.isNull() && dev->type() == DeviceTypeKitInformation::deviceTypeId(k))
         return;
 
+    qWarning("Device is no longer known, removing from kit \"%s\".", qPrintable(k->displayName()));
     setDeviceId(k, Core::Id());
 }
 
diff --git a/src/plugins/qtsupport/qtkitinformation.cpp b/src/plugins/qtsupport/qtkitinformation.cpp
index cd5da5fc104ac2f99a9aa7eaa0b4a5d1cc7d7237..77cee8d9161115a12453d51e8f2be1b53f93686b 100644
--- a/src/plugins/qtsupport/qtkitinformation.cpp
+++ b/src/plugins/qtsupport/qtkitinformation.cpp
@@ -100,8 +100,10 @@ void QtKitInformation::fix(ProjectExplorer::Kit *k)
 {
     QTC_ASSERT(QtVersionManager::instance()->isLoaded(), return);
     BaseQtVersion *version = qtVersion(k);
-    if (!version)
+    if (!version) {
+        qWarning("Qt version is no longer known, removing from kit \"%s\".", qPrintable(k->displayName()));
         setQtVersionId(k, -1);
+    }
 }
 
 ProjectExplorer::KitConfigWidget *QtKitInformation::createConfigWidget(ProjectExplorer::Kit *k) const