diff --git a/include/boost/unordered/detail/foa.hpp b/include/boost/unordered/detail/foa.hpp
index 67c0a46f..30a27272 100644
--- a/include/boost/unordered/detail/foa.hpp
+++ b/include/boost/unordered/detail/foa.hpp
@@ -892,7 +892,7 @@ private:
 
   inline void increment()noexcept
   {
-    BOOST_UNORDERED_ASSUME(p!=nullptr);
+    BOOST_ASSERT(p!=nullptr);
     increment(std::integral_constant<bool,regular_layout>{});
   }