diff --git a/src/BulletCollision/CollisionShapes/btCompoundShape.cpp b/src/BulletCollision/CollisionShapes/btCompoundShape.cpp
index 0aa75f2bf..04e0b63ed 100644
--- a/src/BulletCollision/CollisionShapes/btCompoundShape.cpp
+++ b/src/BulletCollision/CollisionShapes/btCompoundShape.cpp
@@ -77,8 +77,8 @@ void	btCompoundShape::addChildShape(const btTransform& localTransform,btCollisio
 	if (m_dynamicAabbTree)
 	{
 		const btDbvtVolume	bounds=btDbvtVolume::FromMM(localAabbMin,localAabbMax);
-		int index = m_children.size();
-		child.m_node = m_dynamicAabbTree->insert(bounds,(void*)index);
+		size_t index = m_children.size();
+		child.m_node = m_dynamicAabbTree->insert(bounds,reinterpret_cast<void*>(index) );
 	}
 
 	m_children.push_back(child);
@@ -303,7 +303,7 @@ void btCompoundShape::createAabbTreeFromChildren()
         m_dynamicAabbTree = new(mem) btDbvt();
         btAssert(mem==m_dynamicAabbTree);
 
-        for ( int index = 0; index < m_children.size(); index++ )
+        for ( size_t index = 0; index < m_children.size(); index++ )
         {
             btCompoundShapeChild &child = m_children[index];
 
@@ -312,7 +312,7 @@ void btCompoundShape::createAabbTreeFromChildren()
             child.m_childShape->getAabb(child.m_transform,localAabbMin,localAabbMax);
 
             const btDbvtVolume  bounds=btDbvtVolume::FromMM(localAabbMin,localAabbMax);
-            child.m_node = m_dynamicAabbTree->insert(bounds,(void*)index);
+            child.m_node = m_dynamicAabbTree->insert(bounds, reinterpret_cast<void*>(index) );
         }
     }
 }