diff --git a/src/DCPSE_op/DCPSE_op_test.cpp b/src/DCPSE_op/DCPSE_op_test.cpp
index 518bd5b2394190b7cf6c3d63217e66ca205a8e63..e5dde213af9cfb36be9465421a4886a09456d178 100644
--- a/src/DCPSE_op/DCPSE_op_test.cpp
+++ b/src/DCPSE_op/DCPSE_op_test.cpp
@@ -17,8 +17,8 @@
 #include "DCPSE_Solver.hpp"
 #include "Operators/Vector/vector_dist_operators.hpp"
 #include "Vector/vector_dist_subset.hpp"
-//#include "EqnsStructPetsc.hpp"
-#include "EqnsStructEigen.hpp"
+#include "EqnsStructPetsc.hpp"
+//#include "EqnsStructEigen.hpp"
 const bool equations3d1::boundary[] = {NON_PERIODIC, NON_PERIODIC};
 const bool equations3d3::boundary[] = {NON_PERIODIC, NON_PERIODIC};
 const bool equations2d1::boundary[] = {NON_PERIODIC, NON_PERIODIC};