diff --git a/include/internal/catch_expressionresult_builder.hpp b/include/internal/catch_expressionresult_builder.hpp
index a0921c9a..c1484fb7 100644
--- a/include/internal/catch_expressionresult_builder.hpp
+++ b/include/internal/catch_expressionresult_builder.hpp
@@ -82,7 +82,9 @@ namespace Catch {
         else if( m_exprComponents.op == "matches" )
             return m_exprComponents.lhs + " " + m_exprComponents.rhs;
         else if( m_exprComponents.op != "!" ) {
-            if( m_exprComponents.lhs.size() + m_exprComponents.rhs.size() < 40 )
+            if( m_exprComponents.lhs.size() + m_exprComponents.rhs.size() < 40 &&
+                m_exprComponents.lhs.find("\n") == std::string::npos &&
+                m_exprComponents.rhs.find("\n") == std::string::npos )
                 return m_exprComponents.lhs + " " + m_exprComponents.op + " " + m_exprComponents.rhs;
             else
                 return m_exprComponents.lhs + "\n" + m_exprComponents.op + "\n" + m_exprComponents.rhs;