diff --git a/include/boost/variant2/expected.hpp b/include/boost/variant2/expected.hpp
index 87022e8..d7339bc 100644
--- a/include/boost/variant2/expected.hpp
+++ b/include/boost/variant2/expected.hpp
@@ -375,7 +375,7 @@ public:
         });
     }
 
-    expected<T, std::error_code> remap_errors()
+    expected<T, std::error_code> remap_errors() const
     {
         using R = expected<T, std::error_code>;