diff --git a/Eigen/src/SparseLU/SparseLU.h b/Eigen/src/SparseLU/SparseLU.h
index d72d7f150..79b78da99 100644
--- a/Eigen/src/SparseLU/SparseLU.h
+++ b/Eigen/src/SparseLU/SparseLU.h
@@ -309,7 +309,7 @@ class SparseLU : public SparseSolverBase<SparseLU<_MatrixType,_OrderingType> >,
     // Functions 
     void initperfvalues()
     {
-      m_perfv.panel_size = 1;
+      m_perfv.panel_size = 16;
       m_perfv.relax = 1; 
       m_perfv.maxsuper = 128; 
       m_perfv.rowblk = 16;