diff --git a/src/mongo/db/query/find.cpp b/src/mongo/db/query/find.cpp
index ce5ca43..1439662 100644
--- a/src/mongo/db/query/find.cpp
+++ b/src/mongo/db/query/find.cpp
@@ -325,6 +325,7 @@ QueryResult::View getMore(OperationContext* txn,
     bb.skip(sizeof(QueryResult::Value));

     if (NULL == cc) {
+        uassert(40352, "collection dropped between getMore calls", cursorManager->ownsCursorId(cursorid));
         cursorid = 0;
         resultFlags = ResultFlag_CursorNotFound;
     } else {