--- a/Core/DicomNetworking/RemoteModalityParameters.cpp	Thu Sep 20 11:27:48 2018 +0200
+++ b/Core/DicomNetworking/RemoteModalityParameters.cpp	Thu Sep 20 16:17:46 2018 +0200
@@ -86,13 +86,13 @@
 
       SetPortNumber(static_cast<uint16_t>(tmp));
     }
-    catch (std::runtime_error /* error inside JsonCpp */)
+    catch (std::runtime_error& /* error inside JsonCpp */)
     {
       try
       {
         SetPortNumber(boost::lexical_cast<uint16_t>(portValue.asString()));
       }
-      catch (boost::bad_lexical_cast)
+      catch (boost::bad_lexical_cast&)
       {
         throw OrthancException(ErrorCode_BadFileFormat);
       }