diff --git a/src/catch2/internal/catch_stringref.cpp b/src/catch2/internal/catch_stringref.cpp
index 0aa535db..82eef686 100644
--- a/src/catch2/internal/catch_stringref.cpp
+++ b/src/catch2/internal/catch_stringref.cpp
@@ -17,12 +17,12 @@ namespace Catch {
     : StringRef( rawChars, static_cast<StringRef::size_type>(std::strlen(rawChars) ) )
     {}
 
-    auto StringRef::operator == ( StringRef const& other ) const noexcept -> bool {
+    auto StringRef::operator == ( StringRef other ) const noexcept -> bool {
         return m_size == other.m_size
             && (std::memcmp( m_start, other.m_start, m_size ) == 0);
     }
 
-    bool StringRef::operator<(StringRef const& rhs) const noexcept {
+    bool StringRef::operator<(StringRef rhs) const noexcept {
         if (m_size < rhs.m_size) {
             return strncmp(m_start, rhs.m_start, m_size) <= 0;
         }
@@ -50,8 +50,8 @@ namespace Catch {
         }
     }
 
-    auto operator << ( std::ostream& os, StringRef const& str ) -> std::ostream& {
-        return os.write(str.data(), str.size());
+    auto operator << ( std::ostream& os, StringRef str ) -> std::ostream& {
+        return os.write(str.data(), static_cast<std::streamsize>(str.size()));
     }
 
     std::string operator+(StringRef lhs, StringRef rhs) {
@@ -62,7 +62,7 @@ namespace Catch {
         return ret;
     }
 
-    auto operator+=( std::string& lhs, StringRef const& rhs ) -> std::string& {
+    auto operator+=( std::string& lhs, StringRef rhs ) -> std::string& {
         lhs.append(rhs.data(), rhs.size());
         return lhs;
     }
diff --git a/src/catch2/internal/catch_stringref.hpp b/src/catch2/internal/catch_stringref.hpp
index 3d42fc25..e7f1ab70 100644
--- a/src/catch2/internal/catch_stringref.hpp
+++ b/src/catch2/internal/catch_stringref.hpp
@@ -49,8 +49,8 @@ namespace Catch {
         }
 
     public: // operators
-        auto operator == ( StringRef const& other ) const noexcept -> bool;
-        auto operator != (StringRef const& other) const noexcept -> bool {
+        auto operator == ( StringRef other ) const noexcept -> bool;
+        auto operator != (StringRef other) const noexcept -> bool {
             return !(*this == other);
         }
 
@@ -59,7 +59,7 @@ namespace Catch {
             return m_start[index];
         }
 
-        bool operator<(StringRef const& rhs) const noexcept;
+        bool operator<(StringRef rhs) const noexcept;
 
     public: // named queries
         constexpr auto empty() const noexcept -> bool {
@@ -90,8 +90,8 @@ namespace Catch {
         constexpr const_iterator end() const { return m_start + m_size; }
 
 
-        friend std::string& operator += (std::string& lhs, StringRef const& sr);
-        friend std::ostream& operator << (std::ostream& os, StringRef const& sr);
+        friend std::string& operator += (std::string& lhs, StringRef sr);
+        friend std::ostream& operator << (std::ostream& os, StringRef sr);
         friend std::string operator+(StringRef lhs, StringRef rhs);
 
         /**