diff --git a/indra/llcharacter/llkeyframemotion.h b/indra/llcharacter/llkeyframemotion.h
index 952ae0ca7..4c54d5500 100644
--- a/indra/llcharacter/llkeyframemotion.h
+++ b/indra/llcharacter/llkeyframemotion.h
@@ -502,7 +502,7 @@ public:
 	//-------------------------------------------------------------------------
 	// JointMotionList
 	//-------------------------------------------------------------------------
-	class JointMotionList
+	class JointMotionList : public LLRefCount
 	{
 	public:
 		std::vector<JointMotion*> mJointMotionArray;