diff --git a/include/emp/datastructs/QueueCache.hpp b/include/emp/datastructs/QueueCache.hpp
index f7f23e2418..55f66d98f7 100644
--- a/include/emp/datastructs/QueueCache.hpp
+++ b/include/emp/datastructs/QueueCache.hpp
@@ -19,6 +19,7 @@
 #include <utility>
 
 #include "../base/assert.hpp"
+
 #include "map_utils.hpp"
 
  namespace emp {