diff --git a/Plugins/SLACTools/pqSLACDataLoadManager.cxx b/Plugins/SLACTools/pqSLACDataLoadManager.cxx
index 3ba019c26b177f2cd93d19f01a0b3a280aaf6ac2..ce38396f6844e7628d4d225d165f2ac4f6598f19 100644
--- a/Plugins/SLACTools/pqSLACDataLoadManager.cxx
+++ b/Plugins/SLACTools/pqSLACDataLoadManager.cxx
@@ -34,6 +34,7 @@
 #include "vtkSMProperty.h"
 #include "vtkSMSourceProxy.h"
 
+#include <QAction>
 #include <QPushButton>
 #include <QtDebug>
 
diff --git a/Qt/ApplicationComponents/pqColorMapEditor.cxx b/Qt/ApplicationComponents/pqColorMapEditor.cxx
index 0395185e0ab17a544233e9add78cc926ae19f2cd..88b56745eb0d58e5a6b2f2d2cacd62e66c230901 100644
--- a/Qt/ApplicationComponents/pqColorMapEditor.cxx
+++ b/Qt/ApplicationComponents/pqColorMapEditor.cxx
@@ -59,6 +59,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <QDebug>
 #include <QKeyEvent>
 #include <QPointer>
+#include <QStyle>
 #include <QVBoxLayout>
 
 class pqColorMapEditor::pqInternals
diff --git a/Qt/ApplicationComponents/pqDoubleRangeSliderPropertyWidget.cxx b/Qt/ApplicationComponents/pqDoubleRangeSliderPropertyWidget.cxx
index 908e4598e025fab059a7b6b4097ceddf9cffef6a..820361a2b34abc0af6e4f317d7f77c6a954f7129 100644
--- a/Qt/ApplicationComponents/pqDoubleRangeSliderPropertyWidget.cxx
+++ b/Qt/ApplicationComponents/pqDoubleRangeSliderPropertyWidget.cxx
@@ -43,6 +43,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "vtkSMUncheckedPropertyHelper.h"
 
 #include <QGridLayout>
+#include <QStyle>
 
 class pqDoubleRangeSliderPropertyWidget::pqInternals
 {
diff --git a/Qt/ApplicationComponents/pqStandardViewFrameActionsImplementation.cxx b/Qt/ApplicationComponents/pqStandardViewFrameActionsImplementation.cxx
index c297dc3d9e7acab31d5fe326a6207fb326893e73..501633f63a1facae26371e9ea75eccdab582a6cc 100644
--- a/Qt/ApplicationComponents/pqStandardViewFrameActionsImplementation.cxx
+++ b/Qt/ApplicationComponents/pqStandardViewFrameActionsImplementation.cxx
@@ -69,6 +69,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <QPushButton>
 #include <QSet>
 #include <QShortcut>
+#include <QStyle>
 
 //-----------------------------------------------------------------------------
 pqStandardViewFrameActionsImplementation::pqStandardViewFrameActionsImplementation(
diff --git a/Qt/ApplicationComponents/pqTimeInspectorWidget.cxx b/Qt/ApplicationComponents/pqTimeInspectorWidget.cxx
index 6774c2e48e61e6e8278da02075a47b0ecabcd396..e85e614f042143700f938cc855ef486f9f8be2d7 100644
--- a/Qt/ApplicationComponents/pqTimeInspectorWidget.cxx
+++ b/Qt/ApplicationComponents/pqTimeInspectorWidget.cxx
@@ -49,6 +49,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "vtkSMPropertyHelper.h"
 #include "vtkSMSourceProxy.h"
 
+#include <QHeaderView>
 #include <QLineF>
 #include <QPainter>
 #include <QVariant>
diff --git a/Qt/ApplicationComponents/pqViewResolutionPropertyWidget.cxx b/Qt/ApplicationComponents/pqViewResolutionPropertyWidget.cxx
index 6d2865431ef930a13a9fa0796474dbfb126fc4ac..8d2c4b61cd1038836feb610437f6539dcc6e00bd 100644
--- a/Qt/ApplicationComponents/pqViewResolutionPropertyWidget.cxx
+++ b/Qt/ApplicationComponents/pqViewResolutionPropertyWidget.cxx
@@ -39,6 +39,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "vtkSMProxy.h"
 
 #include <QIntValidator>
+#include <QStyle>
 
 class pqViewResolutionPropertyWidget::pqInternals
 {
diff --git a/Qt/Components/pqChangeInputDialog.cxx b/Qt/Components/pqChangeInputDialog.cxx
index 8a67b10095ee037ad3ee1179b342c72d62d11db9..86db3de01c7dccb0727148e709616d9f4c7debe6 100644
--- a/Qt/Components/pqChangeInputDialog.cxx
+++ b/Qt/Components/pqChangeInputDialog.cxx
@@ -45,6 +45,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "vtkSMProxy.h"
 #include "vtkSmartPointer.h"
 
+#include <QHeaderView>
 #include <QItemSelectionModel>
 #include <QLineEdit>
 #include <QRadioButton>
diff --git a/Qt/Components/pqCinemaTrackSelection.cxx b/Qt/Components/pqCinemaTrackSelection.cxx
index 3d6d9dde19f3860c3f0af54f088e4f3b28d1f7b9..eea2e37680126ced46921749c4e70b1295680032 100644
--- a/Qt/Components/pqCinemaTrackSelection.cxx
+++ b/Qt/Components/pqCinemaTrackSelection.cxx
@@ -30,6 +30,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ========================================================================*/
 #include <QDebug>
+#include <QHeaderView>
 
 #include "vtkPVArrayInformation.h"
 #include "vtkPVDataInformation.h"
