diff --git a/include/internal/catch_assertionresult.h b/include/internal/catch_assertionresult.h
index 22d1355e..ca828502 100644
--- a/include/internal/catch_assertionresult.h
+++ b/include/internal/catch_assertionresult.h
@@ -40,14 +40,14 @@ namespace Catch {
     struct AssertionInfo
     {
         AssertionInfo() {}
-        AssertionInfo(  std::string const& _macroName,
+        AssertionInfo(  char const * _macroName,
                         SourceLineInfo const& _lineInfo,
-                        std::string const& _capturedExpression,
+                        char const * _capturedExpression,
                         ResultDisposition::Flags _resultDisposition );
 
-        std::string macroName;
+        char const * macroName;
         SourceLineInfo lineInfo;
-        std::string capturedExpression;
+        char const * capturedExpression;
         ResultDisposition::Flags resultDisposition;
     };
 
diff --git a/include/internal/catch_assertionresult.hpp b/include/internal/catch_assertionresult.hpp
index 9b637028..bb8502f2 100644
--- a/include/internal/catch_assertionresult.hpp
+++ b/include/internal/catch_assertionresult.hpp
@@ -13,9 +13,9 @@
 namespace Catch {
 
 
-    AssertionInfo::AssertionInfo(   std::string const& _macroName,
+    AssertionInfo::AssertionInfo(   char const * _macroName,
                                     SourceLineInfo const& _lineInfo,
-                                    std::string const& _capturedExpression,
+                                    char const * _capturedExpression,
                                     ResultDisposition::Flags _resultDisposition )
     :   macroName( _macroName ),
         lineInfo( _lineInfo ),
@@ -47,7 +47,7 @@ namespace Catch {
     }
 
     bool AssertionResult::hasExpression() const {
-        return !m_info.capturedExpression.empty();
+        return m_info.capturedExpression[0] != 0;
     }
 
     bool AssertionResult::hasMessage() const {
@@ -61,10 +61,10 @@ namespace Catch {
             return m_info.capturedExpression;
     }
     std::string AssertionResult::getExpressionInMacro() const {
-        if( m_info.macroName.empty() )
+        if( m_info.macroName[0] == 0 )
             return m_info.capturedExpression;
         else
-            return m_info.macroName + "( " + m_info.capturedExpression + " )";
+            return std::string(m_info.macroName) + "( " + m_info.capturedExpression + " )";
     }
 
     bool AssertionResult::hasExpandedExpression() const {
diff --git a/include/internal/catch_result_builder.hpp b/include/internal/catch_result_builder.hpp
index 2874c568..55d20cb1 100644
--- a/include/internal/catch_result_builder.hpp
+++ b/include/internal/catch_result_builder.hpp
@@ -28,7 +28,7 @@ namespace Catch {
                                     char const* capturedExpression,
                                     ResultDisposition::Flags resultDisposition,
                                     char const* secondArg )
-    :   m_assertionInfo( macroName, lineInfo, capturedExpressionWithSecondArgument( capturedExpression, secondArg ), resultDisposition ),
+    :   m_assertionInfo( macroName, lineInfo, capturedExpression, resultDisposition ),
         m_shouldDebugBreak( false ),
         m_shouldThrow( false ),
         m_guardException( false )
diff --git a/include/internal/catch_run_context.hpp b/include/internal/catch_run_context.hpp
index 572b54d1..b3dee17f 100644
--- a/include/internal/catch_run_context.hpp
+++ b/include/internal/catch_run_context.hpp
@@ -150,7 +150,7 @@ namespace Catch {
             static_cast<void>(m_reporter->assertionEnded(AssertionStats(result, m_messages, m_totals)));
 
             // Reset working state
-            m_lastAssertionInfo = AssertionInfo( std::string(), m_lastAssertionInfo.lineInfo, "{Unknown expression after the reported line}" , m_lastAssertionInfo.resultDisposition );
+            m_lastAssertionInfo = AssertionInfo( "", m_lastAssertionInfo.lineInfo, "{Unknown expression after the reported line}" , m_lastAssertionInfo.resultDisposition );
             m_lastResult = result;
         }
 
@@ -280,7 +280,7 @@ namespace Catch {
             double duration = 0;
             m_shouldReportUnexpected = true;
             try {
-                m_lastAssertionInfo = AssertionInfo( "TEST_CASE", testCaseInfo.lineInfo, std::string(), ResultDisposition::Normal );
+                m_lastAssertionInfo = AssertionInfo( "TEST_CASE", testCaseInfo.lineInfo, "", ResultDisposition::Normal );
 
                 seedRng( *m_config );
 
@@ -332,9 +332,9 @@ namespace Catch {
     private:
 
         ResultBuilder makeUnexpectedResultBuilder() const {
-            return ResultBuilder(   m_lastAssertionInfo.macroName.c_str(),
+            return ResultBuilder(   m_lastAssertionInfo.macroName,
                                     m_lastAssertionInfo.lineInfo,
-                                    m_lastAssertionInfo.capturedExpression.c_str(),
+                                    m_lastAssertionInfo.capturedExpression,
                                     m_lastAssertionInfo.resultDisposition );
         }