diff --git a/MathLib/LinAlg/PETSc/PETScVector.cpp b/MathLib/LinAlg/PETSc/PETScVector.cpp
index e8c5bfd49aecafd8379869ee6c8e47bcc25367e5..0ed08f47cf78ba0f24a199c4968e02f9b52b69ff 100644
--- a/MathLib/LinAlg/PETSc/PETScVector.cpp
+++ b/MathLib/LinAlg/PETSc/PETScVector.cpp
@@ -96,7 +96,6 @@ PETScVector::PETScVector(PETScVector&& other)
 void PETScVector::config()
 {
     VecSetFromOptions(v_);
-    // VecSetUp(v_); // for petsc ver.>3.3
     VecGetOwnershipRange(v_, &start_rank_, &end_rank_);
 
     VecGetLocalSize(v_, &size_loc_);