diff --git a/components/sceneutil/shadowsbin.cpp b/components/sceneutil/shadowsbin.cpp
index 312d4226b5..8b5c788dd0 100644
--- a/components/sceneutil/shadowsbin.cpp
+++ b/components/sceneutil/shadowsbin.cpp
@@ -54,7 +54,7 @@ ShadowsBin::ShadowsBin()
 
     mShaderAlphaTestStateSet = new osg::StateSet;
     mShaderAlphaTestStateSet->addUniform(new osg::Uniform("alphaTestShadows", true));
-    mShaderAlphaTestStateSet->setMode(GL_BLEND, osg::StateAttribute::OFF | osg::StateAttribute::OVERRIDE);
+    mShaderAlphaTestStateSet->setMode(GL_BLEND, osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED | osg::StateAttribute::OVERRIDE);
 
     for (size_t i = 0; i < sCastingPrograms.size(); ++i)
     {