diff --git a/src/GridGenerator/io/GridVTKWriter/GridVTKWriter.cpp b/src/GridGenerator/io/GridVTKWriter/GridVTKWriter.cpp
index ca1b73f843cfc9ebf0b14215914419c8c1170377..87628f1b01e97c1c21121d4df7b45620f60c0522 100644
--- a/src/GridGenerator/io/GridVTKWriter/GridVTKWriter.cpp
+++ b/src/GridGenerator/io/GridVTKWriter/GridVTKWriter.cpp
@@ -53,6 +53,7 @@ void GridVTKWriter::writeGridToVTKXML(SPtr<Grid> grid, const std::string& name,
 
         nodedatanames.push_back("types");
         nodedatanames.push_back("sparse_id");
+        nodedatanames.push_back("matrix_id");
 
         nodedata.resize(nodedatanames.size());
 
@@ -79,6 +80,7 @@ void GridVTKWriter::writeGridToVTKXML(SPtr<Grid> grid, const std::string& name,
                     const char type = grid->getFieldEntry(grid->transCoordToIndex(x, y, z));
                     nodedata[0].push_back(type);
                     nodedata[1].push_back(grid->getSparseIndex(index));
+                    nodedata[2].push_back(index);
                 }
             }
         }
diff --git a/src/VirtualFluidsBasics/utilities/logger/implementations/LoggerImp.cpp b/src/VirtualFluidsBasics/utilities/logger/implementations/LoggerImp.cpp
index 2fab4ec64dbafb53572f260979c632546039e367..68bb54d9b6be6b7fdea1e2ef8cbe07cddcbe0c48 100644
--- a/src/VirtualFluidsBasics/utilities/logger/implementations/LoggerImp.cpp
+++ b/src/VirtualFluidsBasics/utilities/logger/implementations/LoggerImp.cpp
@@ -65,7 +65,7 @@ logging::Logger& logging::LoggerImp::log(const std::string &message)
         std::string modifiedMessage = message;
         addDebugInformation(modifiedMessage);
         for(auto stream : streams)
-            *stream << modifiedMessage;
+            *stream << modifiedMessage << std::flush;
     }
     std::size_t found = message.find(std::string("\n"));
     if (found != std::string::npos)