diff --git a/examples/SharedMemory/PhysicsServerCommandProcessor.cpp b/examples/SharedMemory/PhysicsServerCommandProcessor.cpp
index 7e6e0a12a..11041e3a2 100644
--- a/examples/SharedMemory/PhysicsServerCommandProcessor.cpp
+++ b/examples/SharedMemory/PhysicsServerCommandProcessor.cpp
@@ -9693,7 +9693,10 @@ void PhysicsServerCommandProcessor::stepSimulationRealTime(double dtInSec,const
 void PhysicsServerCommandProcessor::resetSimulation()
 {
 	//clean up all data
-	m_data->m_dynamicsWorld->getWorldInfo().m_sparsesdf.Reset();
+	if (m_data && m_data->m_dynamicsWorld)
+	{
+		m_data->m_dynamicsWorld->getWorldInfo().m_sparsesdf.Reset();
+	}
 	if (m_data && m_data->m_guiHelper)
 	{
 		m_data->m_guiHelper->removeAllGraphicsInstances();