diff --git a/src/gui/image/qiconengine.cpp b/src/gui/image/qiconengine.cpp
index a25b216432..c09933d45f 100644
--- a/src/gui/image/qiconengine.cpp
+++ b/src/gui/image/qiconengine.cpp
@@ -77,6 +77,13 @@ QSize QIconEngine::actualSize(const QSize &size, QIcon::Mode /*mode*/, QIcon::St
     return size;
 }
 
+/*!
+    \since 5.6
+    Constructs the icon engine.
+ */
+QIconEngine::QIconEngine()
+{
+}
 
 /*!
   Destroys the icon engine.
diff --git a/src/gui/image/qiconengine.h b/src/gui/image/qiconengine.h
index 735da863fd..9977113054 100644
--- a/src/gui/image/qiconengine.h
+++ b/src/gui/image/qiconengine.h
@@ -44,6 +44,7 @@ QT_BEGIN_NAMESPACE
 class Q_GUI_EXPORT QIconEngine
 {
 public:
+    QIconEngine();
     virtual ~QIconEngine();
     virtual void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) = 0;
     virtual QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state);