diff --git a/src/util/meta.hpp b/src/util/meta.hpp
index 025b94ecea43a590865ba667a7680e447ec42694..40f08d481f23199e8e06a47fc41acdd58fdab8c9 100644
--- a/src/util/meta.hpp
+++ b/src/util/meta.hpp
@@ -4,7 +4,6 @@
 
 #include <cstddef>
 #include <iterator>
-#include <cstddef>
 #include <type_traits>
 
 namespace nest {