diff --git a/include/argparse/argparse.hpp b/include/argparse/argparse.hpp
index ec06ba23..c41cdb14 100644
--- a/include/argparse/argparse.hpp
+++ b/include/argparse/argparse.hpp
@@ -545,10 +545,9 @@ std::size_t get_levenshtein_distance(const StringType &s1,
 }
 
 template <typename ValueType>
-std::string_view
-get_most_similar_string(const std::map<std::string_view, ValueType> &map,
-                        const std::string_view input) {
-  std::string_view most_similar{};
+std::string get_most_similar_string(const std::map<std::string, ValueType> &map,
+                                    const std::string &input) {
+  std::string most_similar{};
   std::size_t min_distance = std::numeric_limits<std::size_t>::max();
 
   for (const auto &entry : map) {
@@ -1586,11 +1585,12 @@ class ArgumentParser {
     if constexpr (std::is_same_v<T, Argument>) {
       return (*this)[name];
     } else {
-      auto subparser_it = m_subparser_map.find(name);
+      std::string str_name(name);
+      auto subparser_it = m_subparser_map.find(str_name);
       if (subparser_it != m_subparser_map.end()) {
         return subparser_it->second->get();
       }
-      throw std::logic_error("No such subparser: " + std::string(name));
+      throw std::logic_error("No such subparser: " + str_name);
     }
   }
 
@@ -1720,7 +1720,7 @@ class ArgumentParser {
   /* Getter that returns true if a subcommand is used.
    */
   auto is_subcommand_used(std::string_view subcommand_name) const {
-    return m_subparser_used.at(subcommand_name);
+    return m_subparser_used.at(std::string(subcommand_name));
   }
 
   /* Getter that returns true if a subcommand is used.
@@ -1734,12 +1734,12 @@ class ArgumentParser {
    * @throws std::logic_error in case of an invalid argument name
    */
   Argument &operator[](std::string_view arg_name) const {
-    auto it = m_argument_map.find(arg_name);
+    std::string name(arg_name);
+    auto it = m_argument_map.find(name);
     if (it != m_argument_map.end()) {
       return *(it->second);
     }
     if (!is_valid_prefix_char(arg_name.front())) {
-      std::string name(arg_name);
       const auto legal_prefix_char = get_any_valid_prefix_char();
       const auto prefix = std::string(1, legal_prefix_char);
 
@@ -1972,10 +1972,8 @@ class ArgumentParser {
       if (Argument::is_positional(current_argument, m_prefix_chars)) {
         if (positional_argument_it == std::end(m_positional_arguments)) {
 
-          std::string_view maybe_command = current_argument;
-
           // Check sub-parsers
-          auto subparser_it = m_subparser_map.find(maybe_command);
+          auto subparser_it = m_subparser_map.find(current_argument);
           if (subparser_it != m_subparser_map.end()) {
 
             // build list of remaining args
@@ -1984,7 +1982,7 @@ class ArgumentParser {
 
             // invoke subparser
             m_is_parsed = true;
-            m_subparser_used[maybe_command] = true;
+            m_subparser_used[current_argument] = true;
             return subparser_it->second->get().parse_args(
                 unprocessed_arguments);
           }
@@ -2075,10 +2073,8 @@ class ArgumentParser {
       if (Argument::is_positional(current_argument, m_prefix_chars)) {
         if (positional_argument_it == std::end(m_positional_arguments)) {
 
-          std::string_view maybe_command = current_argument;
-
           // Check sub-parsers
-          auto subparser_it = m_subparser_map.find(maybe_command);
+          auto subparser_it = m_subparser_map.find(current_argument);
           if (subparser_it != m_subparser_map.end()) {
 
             // build list of remaining args
@@ -2087,7 +2083,7 @@ class ArgumentParser {
 
             // invoke subparser
             m_is_parsed = true;
-            m_subparser_used[maybe_command] = true;
+            m_subparser_used[current_argument] = true;
             return subparser_it->second->get().parse_known_args_internal(
                 unprocessed_arguments);
           }
@@ -2172,11 +2168,11 @@ class ArgumentParser {
   bool m_is_parsed = false;
   std::list<Argument> m_positional_arguments;
   std::list<Argument> m_optional_arguments;
-  std::map<std::string_view, argument_it> m_argument_map;
+  std::map<std::string, argument_it> m_argument_map;
   std::string m_parser_path;
   std::list<std::reference_wrapper<ArgumentParser>> m_subparsers;
-  std::map<std::string_view, argument_parser_it> m_subparser_map;
-  std::map<std::string_view, bool> m_subparser_used;
+  std::map<std::string, argument_parser_it> m_subparser_map;
+  std::map<std::string, bool> m_subparser_used;
   std::vector<MutuallyExclusiveGroup> m_mutually_exclusive_groups;
   bool m_suppress = false;
 };