diff --git a/src/io.f90 b/src/io.f90
index 27d81f6..e4535a5 100644
--- a/src/io.f90
+++ b/src/io.f90
@@ -684,7 +684,7 @@ module io
                     (ng_node(i) == ng_node(j))) then 
                     !Now check the basis  level variables
                     do ibasis =1, basisnum(i)
-                        if(basis_type(ibasis,i) /= basis_type(ibasis,j)) then 
+                        if(basis_type(ibasis,lattice_types+i) /= basis_type(ibasis,j)) then 
                             cycle old_loop
                         end if
                     end do