diff --git a/external/qp2-dependencies b/external/qp2-dependencies
index bc856147..90ee61f5 160000
--- a/external/qp2-dependencies
+++ b/external/qp2-dependencies
@@ -1 +1 @@
-Subproject commit bc856147f6e626a6616b20344e5b8e3f30f44a92
+Subproject commit 90ee61f5041c7c94a0c605625a264860292813a0
diff --git a/src/determinants/spindeterminants.irp.f b/src/determinants/spindeterminants.irp.f
index dea4a566..dd55e112 100644
--- a/src/determinants/spindeterminants.irp.f
+++ b/src/determinants/spindeterminants.irp.f
@@ -585,7 +585,7 @@ END_PROVIDER
   enddo
   !$OMP ENDDO
   !$OMP END PARALLEL
-  call i8radix_sort(to_sort, psi_bilinear_matrix_transp_order, N_det,-1)
+  call i8sort(to_sort, psi_bilinear_matrix_transp_order, N_det)
   call iset_order(psi_bilinear_matrix_transp_rows,psi_bilinear_matrix_transp_order,N_det)
   call iset_order(psi_bilinear_matrix_transp_columns,psi_bilinear_matrix_transp_order,N_det)
   !$OMP PARALLEL DO DEFAULT(SHARED) PRIVATE(l)