diff --git a/src/mlpack/core/util/sfinae_utility.hpp b/src/mlpack/core/util/sfinae_utility.hpp
index cc856b469f..3a603b2425 100644
--- a/src/mlpack/core/util/sfinae_utility.hpp
+++ b/src/mlpack/core/util/sfinae_utility.hpp
@@ -12,6 +12,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits.hpp>
+#include <mlpack/prereqs.hpp>
 
 /*
  * Constructs a template supporting the SFINAE pattern.