diff --git a/include/armadillo_bits/span.hpp b/include/armadillo_bits/span.hpp
index 0b30362e..2eb0dbb6 100644
--- a/include/armadillo_bits/span.hpp
+++ b/include/armadillo_bits/span.hpp
@@ -21,7 +21,7 @@
 //! @{
 
 
-struct span_alt { };
+struct span_alt {};
 
 
 template<typename junk = int>