diff --git a/src/plugins/projectexplorer/buildsettingspropertiespage.cpp b/src/plugins/projectexplorer/buildsettingspropertiespage.cpp
index e319388f8bfb795fcc43323093b6420725a7e633..4daa8009c3a7b2b17f4be987a1b2c3637d1b503f 100644
--- a/src/plugins/projectexplorer/buildsettingspropertiespage.cpp
+++ b/src/plugins/projectexplorer/buildsettingspropertiespage.cpp
@@ -73,7 +73,7 @@ BuildSettingsPanel::BuildSettingsPanel(Project *project)
 
 BuildSettingsPanel::~BuildSettingsPanel()
 {
-    delete m_widget;
+
 }
 
 QString BuildSettingsPanel::name() const
diff --git a/src/plugins/projectexplorer/dependenciespanel.cpp b/src/plugins/projectexplorer/dependenciespanel.cpp
index 3d4fc5519ea52084236608b8647e8ee3f3bb0e6e..0c8ed3efa39296dd01b2de61396b83a323dc2c29 100644
--- a/src/plugins/projectexplorer/dependenciespanel.cpp
+++ b/src/plugins/projectexplorer/dependenciespanel.cpp
@@ -283,7 +283,7 @@ DependenciesPanel::DependenciesPanel(SessionManager *session, Project *project)
 
 DependenciesPanel::~DependenciesPanel()
 {
-    delete m_widget;
+
 }
 
 QString DependenciesPanel::name() const
diff --git a/src/plugins/projectexplorer/editorsettingspropertiespage.cpp b/src/plugins/projectexplorer/editorsettingspropertiespage.cpp
index 82b185a4baba4ac1bb262b5546678694640bdfd4..e589ee0fd61a437f55ccd3c058939617bf078048 100644
--- a/src/plugins/projectexplorer/editorsettingspropertiespage.cpp
+++ b/src/plugins/projectexplorer/editorsettingspropertiespage.cpp
@@ -55,7 +55,7 @@ EditorSettingsPanel::EditorSettingsPanel(Project *project)
 
 EditorSettingsPanel::~EditorSettingsPanel()
 {
-    delete m_widget;
+
 }
 
 QString EditorSettingsPanel::name() const
diff --git a/src/plugins/projectexplorer/runsettingspropertiespage.cpp b/src/plugins/projectexplorer/runsettingspropertiespage.cpp
index 055341f6bebd55c50cb68c9f49db72aae733a8b5..c7fc27525c49c9449e82179db71e672f9142eaac 100644
--- a/src/plugins/projectexplorer/runsettingspropertiespage.cpp
+++ b/src/plugins/projectexplorer/runsettingspropertiespage.cpp
@@ -111,7 +111,7 @@ RunSettingsPanel::RunSettingsPanel(Project *project)
 
 RunSettingsPanel::~RunSettingsPanel()
 {
-    delete m_widget;
+
 }
 
 QString RunSettingsPanel::name() const