diff --git a/src/gui/painting/qregion.cpp b/src/gui/painting/qregion.cpp
index 2843e5ccb7..66b12e5034 100644
--- a/src/gui/painting/qregion.cpp
+++ b/src/gui/painting/qregion.cpp
@@ -728,6 +728,17 @@ QRegion QRegion::intersect(const QRect &r) const
     \snippet doc/src/snippets/code/src_gui_painting_qregion_unix.cpp 0
 */
 
+/*!
+    \fn bool QRegion::isNull() const
+    \since 5.0
+
+    Returns true if the region is empty; otherwise returns false. An
+    empty region is a region that contains no points. This function is
+    the same as isEmpty
+
+    \sa isEmpty()
+*/
+
 /*!
     \fn bool QRegion::contains(const QPoint &p) const
 
@@ -3893,6 +3904,10 @@ bool QRegion::isEmpty() const
     return d == &shared_empty || d->qt_rgn->numRects == 0;
 }
 
+bool QRegion::isNull() const
+{
+    return d == &shared_empty || d->qt_rgn->numRects == 0;
+}
 
 bool QRegion::contains(const QPoint &p) const
 {
diff --git a/src/gui/painting/qregion.h b/src/gui/painting/qregion.h
index a599b3ad16..a5ea88b8bd 100644
--- a/src/gui/painting/qregion.h
+++ b/src/gui/painting/qregion.h
@@ -82,6 +82,7 @@ public:
 #endif
     inline void swap(QRegion &other) { qSwap(d, other.d); }
     bool isEmpty() const;
+    bool isNull() const;
 
     bool contains(const QPoint &p) const;
     bool contains(const QRect &r) const;