diff --git a/src/plugins/qbsprojectmanager/qbsbuildstep.cpp b/src/plugins/qbsprojectmanager/qbsbuildstep.cpp
index 5e86c8b3ce7..59cda6a0980 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildstep.cpp
+++ b/src/plugins/qbsprojectmanager/qbsbuildstep.cpp
@@ -436,6 +436,11 @@ QbsBuildStepConfigWidget::QbsBuildStepConfigWidget(QbsBuildStep *step) :
     updateState();
 }
 
+QbsBuildStepConfigWidget::~QbsBuildStepConfigWidget()
+{
+    delete m_ui;
+}
+
 QString QbsBuildStepConfigWidget::summaryText() const
 {
     return m_summary;
diff --git a/src/plugins/qbsprojectmanager/qbsbuildstep.h b/src/plugins/qbsprojectmanager/qbsbuildstep.h
index 2720d83968c..733b7426a4d 100644
--- a/src/plugins/qbsprojectmanager/qbsbuildstep.h
+++ b/src/plugins/qbsprojectmanager/qbsbuildstep.h
@@ -129,6 +129,7 @@ class QbsBuildStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
     Q_OBJECT
 public:
     QbsBuildStepConfigWidget(QbsBuildStep *step);
+    ~QbsBuildStepConfigWidget();
     QString summaryText() const;
     QString displayName() const;
 
diff --git a/src/plugins/qbsprojectmanager/qbscleanstep.cpp b/src/plugins/qbsprojectmanager/qbscleanstep.cpp
index f631dc21e7a..3aafdc6bb2e 100644
--- a/src/plugins/qbsprojectmanager/qbscleanstep.cpp
+++ b/src/plugins/qbsprojectmanager/qbscleanstep.cpp
@@ -272,6 +272,11 @@ QbsCleanStepConfigWidget::QbsCleanStepConfigWidget(QbsCleanStep *step) :
     updateState();
 }
 
+QbsCleanStepConfigWidget::~QbsCleanStepConfigWidget()
+{
+    delete m_ui;
+}
+
 QString QbsCleanStepConfigWidget::summaryText() const
 {
     return m_summary;
diff --git a/src/plugins/qbsprojectmanager/qbscleanstep.h b/src/plugins/qbsprojectmanager/qbscleanstep.h
index 0e05afcb091..7127ae46582 100644
--- a/src/plugins/qbsprojectmanager/qbscleanstep.h
+++ b/src/plugins/qbsprojectmanager/qbscleanstep.h
@@ -104,6 +104,7 @@ class QbsCleanStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
     Q_OBJECT
 public:
     QbsCleanStepConfigWidget(QbsCleanStep *step);
+    ~QbsCleanStepConfigWidget();
     QString summaryText() const;
     QString displayName() const;
 
diff --git a/src/plugins/qbsprojectmanager/qbsinstallstep.cpp b/src/plugins/qbsprojectmanager/qbsinstallstep.cpp
index b25038e2109..b00bb59a340 100644
--- a/src/plugins/qbsprojectmanager/qbsinstallstep.cpp
+++ b/src/plugins/qbsprojectmanager/qbsinstallstep.cpp
@@ -291,6 +291,11 @@ QbsInstallStepConfigWidget::QbsInstallStepConfigWidget(QbsInstallStep *step) :
     updateState();
 }
 
+QbsInstallStepConfigWidget::~QbsInstallStepConfigWidget()
+{
+    delete m_ui;
+}
+
 QString QbsInstallStepConfigWidget::summaryText() const
 {
     return m_summary;
diff --git a/src/plugins/qbsprojectmanager/qbsinstallstep.h b/src/plugins/qbsprojectmanager/qbsinstallstep.h
index 9a4f7eef307..9899e6aa974 100644
--- a/src/plugins/qbsprojectmanager/qbsinstallstep.h
+++ b/src/plugins/qbsprojectmanager/qbsinstallstep.h
@@ -106,6 +106,7 @@ class QbsInstallStepConfigWidget : public ProjectExplorer::BuildStepConfigWidget
     Q_OBJECT
 public:
     QbsInstallStepConfigWidget(QbsInstallStep *step);
+    ~QbsInstallStepConfigWidget();
     QString summaryText() const;
     QString displayName() const;