diff --git a/src/bin/eolian_mono/eolian/mono/parameter.hh b/src/bin/eolian_mono/eolian/mono/parameter.hh
index 7c7b8f275d..deb9a9e5a8 100644
--- a/src/bin/eolian_mono/eolian/mono/parameter.hh
+++ b/src/bin/eolian_mono/eolian/mono/parameter.hh
@@ -909,7 +909,7 @@ struct native_convert_out_variable_generator
            // Assign a default value to the out variable in case we end up in the catch clause.
            return as_generator(
                    string << " = default(" << type << ");"
-                   ).generate(sink, std::make_tuple(param.param_name, param), context);
+                   ).generate(sink, std::make_tuple(escape_keyword(param.param_name), param), context);
         }
       return true;
    }