diff --git a/src/cxxopts.hpp b/src/cxxopts.hpp
index edc53a7..6f0dcbe 100644
--- a/src/cxxopts.hpp
+++ b/src/cxxopts.hpp
@@ -666,6 +666,7 @@ namespace cxxopts
     Options(std::string program, std::string help_string = "")
     : m_program(std::move(program))
     , m_help_string(toLocalString(std::move(help_string)))
+    , m_next_positional(m_positional.end())
     {
     }