diff --git a/src/plugins/projectexplorer/kit.cpp b/src/plugins/projectexplorer/kit.cpp
index 88e2e65adaa..bb44b6bec81 100644
--- a/src/plugins/projectexplorer/kit.cpp
+++ b/src/plugins/projectexplorer/kit.cpp
@@ -228,13 +228,11 @@ Kit *Kit::clone(bool keepName) const
 
 void Kit::copyFrom(const Kit *k)
 {
-    KitGuard g(this);
     copyKitCommon(this, k);
     d->m_autodetected = k->d->m_autodetected;
     d->m_autoDetectionSource = k->d->m_autoDetectionSource;
     d->m_unexpandedDisplayName = k->d->m_unexpandedDisplayName;
     d->m_fileSystemFriendlyName = k->d->m_fileSystemFriendlyName;
-    d->m_mustNotify = true;
 }
 
 bool Kit::isValid() const