diff --git a/include/ada/url_pattern.h b/include/ada/url_pattern.h
index 13466dd62..aa891d7f3 100644
--- a/include/ada/url_pattern.h
+++ b/include/ada/url_pattern.h
@@ -198,11 +198,11 @@ class url_pattern_component {
 
   // This function explicitly takes a std::string because it is moved.
   // To avoid unnecessary copy, move each value while calling the constructor.
-  url_pattern_component(std::string_view new_pattern, std::regex&& new_regexp,
+  url_pattern_component(std::string&& new_pattern, std::regex&& new_regexp,
                         std::regex_constants::syntax_option_type new_flags,
                         std::vector<std::string>&& new_group_name_list,
                         bool new_has_regexp_groups)
-      : regexp(new_regexp),
+      : regexp(std::move(new_regexp)),
         pattern(std::move(new_pattern)),
         flags(new_flags),
         group_name_list(new_group_name_list),
diff --git a/pbcopy b/pbcopy
new file mode 100644
index 000000000..55cbc2cb3
--- /dev/null
+++ b/pbcopy
@@ -0,0 +1,36 @@
+diff --git a/include/ada/url_pattern-inl.h b/include/ada/url_pattern-inl.h
+index c7c04a06..6da583e9 100644
+--- a/include/ada/url_pattern-inl.h
++++ b/include/ada/url_pattern-inl.h
+@@ -41,7 +41,7 @@ url_pattern_component::create_component_match_result(
+     // Let value be Get(execResult, ToString(index)).
+     // Set groups[name] to value.
+     result.groups.insert({
+-        group_name_list[index - 1],
++        "",
+         exec_result[index].str(),
+     });
+   }
+diff --git a/include/ada/url_pattern.h b/include/ada/url_pattern.h
+index 13466dd6..7aa41a57 100644
+--- a/include/ada/url_pattern.h
++++ b/include/ada/url_pattern.h
+@@ -203,9 +203,8 @@ class url_pattern_component {
+                         std::vector<std::string>&& new_group_name_list,
+                         bool new_has_regexp_groups)
+       : regexp(new_regexp),
+-        pattern(std::move(new_pattern)),
++        pattern(new_pattern),
+         flags(new_flags),
+-        group_name_list(new_group_name_list),
+         has_regexp_groups(new_has_regexp_groups) {}
+ 
+   // @see https://urlpattern.spec.whatwg.org/#compile-a-component
+@@ -223,7 +222,6 @@ class url_pattern_component {
+   std::regex regexp{};
+   std::string pattern{};
+   std::regex_constants::syntax_option_type flags = std::regex::ECMAScript;
+-  std::vector<std::string> group_name_list{};
+   bool has_regexp_groups = false;
+ };
+ 
diff --git a/src/url_pattern.cpp b/src/url_pattern.cpp
index 7f1e80187..0916ce0c5 100644
--- a/src/url_pattern.cpp
+++ b/src/url_pattern.cpp
@@ -536,7 +536,7 @@ url_pattern_component::compile(std::string_view input, F encoding_callback,
   // Return a new component whose pattern string is pattern string, regular
   // expression is regular expression, group name list is name list, and has
   // regexp groups is has regexp groups.
-  return url_pattern_component(pattern_string, std::move(regular_expression),
+  return url_pattern_component(std::move(pattern_string), std::move(regular_expression),
                                flags, std::move(name_list), has_regexp_groups);
 }