diff --git a/src/plugins/autotoolsprojectmanager/makestep.cpp b/src/plugins/autotoolsprojectmanager/makestep.cpp
index 84ebec917ac..3fb0ec41053 100644
--- a/src/plugins/autotoolsprojectmanager/makestep.cpp
+++ b/src/plugins/autotoolsprojectmanager/makestep.cpp
@@ -242,7 +242,7 @@ MakeStepConfigWidget::MakeStepConfigWidget(MakeStep *makeStep) :
     });
     connect(makeStep->project(), &Project::activeProjectConfigurationChanged,
             this, [this](ProjectConfiguration *pc) {
-        if (pc->isActive())
+        if (pc && pc->isActive())
             updateDetails();
     });
 }
diff --git a/src/plugins/genericprojectmanager/genericmakestep.cpp b/src/plugins/genericprojectmanager/genericmakestep.cpp
index 082be2dd141..be9f30854de 100644
--- a/src/plugins/genericprojectmanager/genericmakestep.cpp
+++ b/src/plugins/genericprojectmanager/genericmakestep.cpp
@@ -258,7 +258,7 @@ GenericMakeStepConfigWidget::GenericMakeStepConfigWidget(GenericMakeStep *makeSt
     });
     connect(pro, &Project::activeProjectConfigurationChanged,
             this, [this](ProjectConfiguration *pc) {
-        if (pc->isActive()) {
+        if (pc && pc->isActive()) {
             updateMakeOverrideLabel();
             updateDetails();
         }
diff --git a/src/plugins/ios/iosbuildstep.cpp b/src/plugins/ios/iosbuildstep.cpp
index 9d5149e89aa..c088b1ede48 100644
--- a/src/plugins/ios/iosbuildstep.cpp
+++ b/src/plugins/ios/iosbuildstep.cpp
@@ -266,7 +266,7 @@ IosBuildStepConfigWidget::IosBuildStepConfigWidget(IosBuildStep *buildStep)
     });
     connect(pro, &Project::activeProjectConfigurationChanged,
             this, [this](ProjectConfiguration *pc) {
-        if (pc->isActive())
+        if (pc && pc->isActive())
             updateDetails();
     });
 }
diff --git a/src/plugins/ios/iosdsymbuildstep.cpp b/src/plugins/ios/iosdsymbuildstep.cpp
index 2e93c401dfb..3d876621e9f 100644
--- a/src/plugins/ios/iosdsymbuildstep.cpp
+++ b/src/plugins/ios/iosdsymbuildstep.cpp
@@ -266,7 +266,7 @@ IosPresetBuildStepConfigWidget::IosPresetBuildStepConfigWidget(IosPresetBuildSte
     });
     connect(pro, &Project::activeProjectConfigurationChanged,
             this, [this](ProjectConfiguration *pc) {
-        if (pc->isActive())
+        if (pc && pc->isActive())
             updateDetails();
     });
 }
diff --git a/src/plugins/qbsprojectmanager/qbsproject.cpp b/src/plugins/qbsprojectmanager/qbsproject.cpp
index 1d81c013ade..11e035a0e73 100644
--- a/src/plugins/qbsprojectmanager/qbsproject.cpp
+++ b/src/plugins/qbsprojectmanager/qbsproject.cpp
@@ -146,7 +146,7 @@ QbsProject::QbsProject(const FileName &fileName) :
     });
     connect(this, &Project::activeProjectConfigurationChanged,
             this, [this](ProjectConfiguration *pc) {
-        if (pc->isActive())
+        if (pc && pc->isActive())
             startParsing();
     });
 
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp b/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp
index 9bf3dee51d0..4d62b470754 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectconfigwidget.cpp
@@ -104,7 +104,7 @@ QmakeProjectConfigWidget::QmakeProjectConfigWidget(QmakeBuildConfiguration *bc)
     });
     connect(project, &Project::activeProjectConfigurationChanged,
             this, [this](ProjectConfiguration *pc) {
-        if (pc->isActive())
+        if (pc && pc->isActive())
             environmentChanged();
     });
     connect(project, &QmakeProject::buildDirectoryInitialized,