diff --git a/include/internal/catch_message.cpp b/include/internal/catch_message.cpp
index 8684970a..89fa96d8 100644
--- a/include/internal/catch_message.cpp
+++ b/include/internal/catch_message.cpp
@@ -12,7 +12,7 @@
 
 namespace Catch {
 
-    MessageInfo::MessageInfo(   std::string const& _macroName,
+    MessageInfo::MessageInfo(   StringRef const& _macroName,
                                 SourceLineInfo const& _lineInfo,
                                 ResultWas::OfType _type )
     :   macroName( _macroName ),
@@ -35,7 +35,7 @@ namespace Catch {
 
     ////////////////////////////////////////////////////////////////////////////
 
-    Catch::MessageBuilder::MessageBuilder( std::string const& macroName,
+    Catch::MessageBuilder::MessageBuilder( StringRef const& macroName,
                                            SourceLineInfo const& lineInfo,
                                            ResultWas::OfType type )
         :m_info(macroName, lineInfo, type) {}
diff --git a/include/internal/catch_message.h b/include/internal/catch_message.h
index 0a512ed5..96f098f6 100644
--- a/include/internal/catch_message.h
+++ b/include/internal/catch_message.h
@@ -12,15 +12,16 @@
 #include "catch_result_type.h"
 #include "catch_common.h"
 #include "catch_stream.h"
+#include "catch_stringref.h"
 
 namespace Catch {
 
     struct MessageInfo {
-        MessageInfo(    std::string const& _macroName,
+        MessageInfo(    StringRef const& _macroName,
                         SourceLineInfo const& _lineInfo,
                         ResultWas::OfType _type );
 
-        std::string macroName;
+        StringRef macroName;
         std::string message;
         SourceLineInfo lineInfo;
         ResultWas::OfType type;
@@ -44,7 +45,7 @@ namespace Catch {
     };
 
     struct MessageBuilder : MessageStream {
-        MessageBuilder( std::string const& macroName,
+        MessageBuilder( StringRef const& macroName,
                         SourceLineInfo const& lineInfo,
                         ResultWas::OfType type );