diff --git a/src/cpu/VirtualFluidsCore/Utilities/CheckpointConverter.cpp b/src/cpu/VirtualFluidsCore/Utilities/CheckpointConverter.cpp
index 78001c1d5c4687a296df912e8d81c659d031a6e7..caad0f726762e3ffafe2b657516bd305de61b603 100644
--- a/src/cpu/VirtualFluidsCore/Utilities/CheckpointConverter.cpp
+++ b/src/cpu/VirtualFluidsCore/Utilities/CheckpointConverter.cpp
@@ -377,7 +377,7 @@ void CheckpointConverter::convertDataSet(int step, int procCount)
         }
 
         //-------------------------------------- H1 -----------------------------
-        int fs = MPI_File_get_size(file_handlerR1, &fsize);
+        MPI_File_get_size(file_handlerR1, &fsize);
         if (fsize > 0)
         {
             doubleValuesArrayH1.resize(blocksCount * doubleCountInBlock);