diff --git a/components/nifosg/controller.cpp b/components/nifosg/controller.cpp
index aabe07c86..ce6ab2c48 100644
--- a/components/nifosg/controller.cpp
+++ b/components/nifosg/controller.cpp
@@ -441,9 +441,9 @@ void ParticleSystemController::operator() (osg::Node* node, osg::NodeVisitor* nv
 {
     if (hasInput())
     {
-        osgParticle::ParticleProcessor* emitter = static_cast<osgParticle::ParticleProcessor*>(node);
+        osgParticle::ParticleSystem* partsys = static_cast<osgParticle::ParticleSystem*>(node);
         float time = getInputValue(nv);
-        emitter->setEnabled(time >= mEmitStart && time < mEmitStop);
+        partsys->setFrozen(!(time >= mEmitStart && time < mEmitStop));
     }
     traverse(node, nv);
 }
diff --git a/components/nifosg/nifloader.cpp b/components/nifosg/nifloader.cpp
index 874ca9eaa..b5311953e 100644
--- a/components/nifosg/nifloader.cpp
+++ b/components/nifosg/nifloader.cpp
@@ -994,7 +994,7 @@ namespace NifOsg
 
                 osg::ref_ptr<ParticleSystemController> callback(new ParticleSystemController(partctrl));
                 setupParticleController(partctrl, callback, particleflags);
-                emitter->setUpdateCallback(callback);
+                partsys->setUpdateCallback(callback);
             }
 
             // affectors must be attached *after* the emitter in the scene graph for correct update order