diff --git a/src/plugins/projectexplorer/buildsettingspropertiespage.cpp b/src/plugins/projectexplorer/buildsettingspropertiespage.cpp
index 3fd4c8999ac..28665c27525 100644
--- a/src/plugins/projectexplorer/buildsettingspropertiespage.cpp
+++ b/src/plugins/projectexplorer/buildsettingspropertiespage.cpp
@@ -125,6 +125,7 @@ BuildSettingsSubWidgets::BuildSettingsSubWidgets(QWidget *parent)
     : QWidget(parent)
 {
     new QVBoxLayout(this);
+    layout()->setMargin(0);
 }
 
 ///
diff --git a/src/plugins/projectexplorer/projectwindow.cpp b/src/plugins/projectexplorer/projectwindow.cpp
index d71ad55cea0..585b8620631 100644
--- a/src/plugins/projectexplorer/projectwindow.cpp
+++ b/src/plugins/projectexplorer/projectwindow.cpp
@@ -158,6 +158,7 @@ ActiveConfigurationWidget::ActiveConfigurationWidget(QWidget *parent)
     : QWidget(parent)
 {
     QGridLayout *grid = new QGridLayout(this);
+    grid->setMargin(0);
     RunConfigurationComboBox *runConfigurationComboBox = new RunConfigurationComboBox(this);
     grid->addWidget(new QLabel(tr("Active run configuration")), 0, 0);
     grid->addWidget(runConfigurationComboBox, 0, 1);
@@ -603,6 +604,7 @@ ProjectWindow::ProjectWindow(QWidget *parent)
 
     m_spacerBetween = new QWidget(this);
     QVBoxLayout *vbox = new QVBoxLayout(m_spacerBetween);
+    vbox->setMargin(0);
     m_spacerBetween->setLayout(vbox);
     vbox->addSpacerItem(new QSpacerItem(10, 15, QSizePolicy::Fixed, QSizePolicy::Fixed));
     vbox->addWidget(new OnePixelBlackLine(m_spacerBetween));
diff --git a/src/plugins/projectexplorer/runsettingspropertiespage.ui b/src/plugins/projectexplorer/runsettingspropertiespage.ui
index e95e8e4b765..8c4aec3e786 100644
--- a/src/plugins/projectexplorer/runsettingspropertiespage.ui
+++ b/src/plugins/projectexplorer/runsettingspropertiespage.ui
@@ -6,11 +6,14 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>416</width>
-    <height>35</height>
+    <width>437</width>
+    <height>25</height>
    </rect>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="margin">
+    <number>0</number>
+   </property>
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
diff --git a/src/plugins/qt4projectmanager/makestep.ui b/src/plugins/qt4projectmanager/makestep.ui
index f2007e7e398..1dfff96f279 100644
--- a/src/plugins/qt4projectmanager/makestep.ui
+++ b/src/plugins/qt4projectmanager/makestep.ui
@@ -6,11 +6,14 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>235</width>
-    <height>64</height>
+    <width>220</width>
+    <height>46</height>
    </rect>
   </property>
   <layout class="QFormLayout" name="formLayout">
+   <property name="margin">
+    <number>0</number>
+   </property>
    <item row="0" column="0">
     <widget class="QLabel" name="makeLabel">
      <property name="text">
diff --git a/src/plugins/qt4projectmanager/qmakestep.ui b/src/plugins/qt4projectmanager/qmakestep.ui
index f8d5b9b62b6..f59dedaf526 100644
--- a/src/plugins/qt4projectmanager/qmakestep.ui
+++ b/src/plugins/qt4projectmanager/qmakestep.ui
@@ -6,11 +6,14 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>448</width>
-    <height>210</height>
+    <width>390</width>
+    <height>172</height>
    </rect>
   </property>
   <layout class="QFormLayout" name="formLayout">
+   <property name="margin">
+    <number>0</number>
+   </property>
    <item row="0" column="0">
     <widget class="QLabel" name="label_2">
      <property name="text">
diff --git a/src/plugins/qt4projectmanager/qt4projectconfigwidget.ui b/src/plugins/qt4projectmanager/qt4projectconfigwidget.ui
index 4ccc7d45334..785e8d63272 100644
--- a/src/plugins/qt4projectmanager/qt4projectconfigwidget.ui
+++ b/src/plugins/qt4projectmanager/qt4projectconfigwidget.ui
@@ -52,6 +52,9 @@ placeholder</string>
    <item>
     <widget class="QWidget" name="detailsWidget" native="true">
      <layout class="QGridLayout" name="gridLayout">
+      <property name="margin">
+       <number>0</number>
+      </property>
       <item row="0" column="0">
        <widget class="QLabel" name="nameLabel">
         <property name="text">
diff --git a/src/plugins/qt4projectmanager/qt4runconfiguration.cpp b/src/plugins/qt4projectmanager/qt4runconfiguration.cpp
index 3b12a26b18f..76e25d0a794 100644
--- a/src/plugins/qt4projectmanager/qt4runconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt4runconfiguration.cpp
@@ -141,6 +141,7 @@ Qt4RunConfigurationWidget::Qt4RunConfigurationWidget(Qt4RunConfiguration *qt4Run
     resetButton->setIcon(QIcon(":/core/images/reset.png"));
 
     QHBoxLayout *boxlayout = new QHBoxLayout();
+    boxlayout->setMargin(0);
     boxlayout->addWidget(m_workingDirectoryEdit);
     boxlayout->addWidget(resetButton);
     toplayout->addRow(tr("Working Directory:"), boxlayout);
@@ -165,7 +166,7 @@ Qt4RunConfigurationWidget::Qt4RunConfigurationWidget(Qt4RunConfiguration *qt4Run
     m_detailsWidget = new QWidget(this);
     m_detailsWidget->setVisible(false);
     QVBoxLayout *vboxTopLayout = new QVBoxLayout(this);
-    vboxTopLayout->setContentsMargins(0, -1, 0, -1);
+    vboxTopLayout->setMargin(0);
     m_summaryLabel = new QLabel(this);
     m_summaryLabel->setText("This is a summary");
     QAbstractButton *detailsButton = new Utils::DetailsButton(this);
@@ -174,6 +175,7 @@ Qt4RunConfigurationWidget::Qt4RunConfigurationWidget(Qt4RunConfiguration *qt4Run
             this, SLOT(toggleDetails()));
 
     QHBoxLayout *detailsLayout = new QHBoxLayout();
+    detailsLayout->setMargin(0);
     detailsLayout->addWidget(m_summaryLabel);
     detailsLayout->addWidget(detailsButton);