diff --git a/apps/gpu/LBM/MusselOyster/MusselOyster.cpp b/apps/gpu/LBM/MusselOyster/MusselOyster.cpp
index 60d119735ecda391b1f7b7efe9a4552827ec8435..d16615dbeaeceb14f58fa6421e86f47153ce8418 100644
--- a/apps/gpu/LBM/MusselOyster/MusselOyster.cpp
+++ b/apps/gpu/LBM/MusselOyster/MusselOyster.cpp
@@ -131,7 +131,7 @@ void multipleLevel(const std::string& configPath)
     std::string bivalveType = "OYSTER"; // "MUSSEL" "OYSTER"
     std::string gridPath(gridPathParent + bivalveType); // only for GridGenerator, for GridReader the gridPath needs to be set in the config file
 
-    real dxGrid = (real)0.1; // 0.1
+    real dxGrid = (real)1.0; // 1.0
     if (para->getNumprocs() == 4)
         dxGrid =0.66666667;
     else if (para->getNumprocs() == 8)