diff --git a/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx b/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
index 0450f1cbbf72..f93c292f0922 100644
--- a/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
+++ b/slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.cxx
@@ -280,7 +280,8 @@ SceneObject::~SceneObject()
 }
 
 Iris::Iris()
-    : SceneObject ()
+    : SceneObject()
+    , maTexture(0)
 {
 }