Improve assert message in Convert

diff --git a/include/deal.II/base/patterns.h b/include/deal.II/base/patterns.h
index f3d0d08d53b4f93eba7adf2bccccf60b064c2391..8cc66785b79796d94692d83ed6b6a183bc2ab130 100644 (file)
--- a/include/deal.II/base/patterns.h
+++ b/include/deal.II/base/patterns.h
@@ -1402,8 +1402,8 @@ namespace Patterns
     DeclException2(ExcNoMatch,
                    std::string,
                    std::string,
-                   << "The string " << arg1 << " does not match the pattern \""
-                   << arg2 << "\"");
+                   << "The string \"" << arg1
+                   << "\" does not match the pattern \"" << arg2 << "\"");
     //@}
   } // namespace Tools
 } // namespace Patterns