diff --git a/Userland/Libraries/LibRegex/RegexMatcher.cpp b/Userland/Libraries/LibRegex/RegexMatcher.cpp
index 3603df182e..ffb6b5bf3d 100644
--- a/Userland/Libraries/LibRegex/RegexMatcher.cpp
+++ b/Userland/Libraries/LibRegex/RegexMatcher.cpp
@@ -111,7 +111,7 @@ RegexResult Matcher<Parser>::match(RegexStringView const& view, Optional<typenam
 }
 
 template<typename Parser>
-RegexResult Matcher<Parser>::match(Vector<RegexStringView> const views, Optional<typename ParserTraits<Parser>::OptionsType> regex_options) const
+RegexResult Matcher<Parser>::match(Vector<RegexStringView> const& views, Optional<typename ParserTraits<Parser>::OptionsType> regex_options) const
 {
     // If the pattern *itself* isn't stateful, reset any changes to start_offset.
     if (!((AllFlags)m_regex_options.value() & AllFlags::Internal_Stateful))
diff --git a/Userland/Libraries/LibRegex/RegexMatcher.h b/Userland/Libraries/LibRegex/RegexMatcher.h
index 4524fa4dc0..8e1ce64e6d 100644
--- a/Userland/Libraries/LibRegex/RegexMatcher.h
+++ b/Userland/Libraries/LibRegex/RegexMatcher.h
@@ -52,7 +52,7 @@ public:
     ~Matcher() = default;
 
     RegexResult match(RegexStringView const&, Optional<typename ParserTraits<Parser>::OptionsType> = {}) const;
-    RegexResult match(Vector<RegexStringView> const, Optional<typename ParserTraits<Parser>::OptionsType> = {}) const;
+    RegexResult match(Vector<RegexStringView> const&, Optional<typename ParserTraits<Parser>::OptionsType> = {}) const;
 
     typename ParserTraits<Parser>::OptionsType options() const
     {