diff --git a/include/boost/unordered/detail/foa.hpp b/include/boost/unordered/detail/foa.hpp
index 5614e587..5f731494 100644
--- a/include/boost/unordered/detail/foa.hpp
+++ b/include/boost/unordered/detail/foa.hpp
@@ -675,7 +675,7 @@ struct pow2_quadratic_prober
    * arrays).
    */
 
-  /*inline*/ bool next(std::size_t mask)
+  inline bool next(std::size_t mask)
   {
     step+=1;
     pos=(pos+step)&mask;