diff --git a/src/mode_merge.f90 b/src/mode_merge.f90
index 8a812b1..1e8d291 100644
--- a/src/mode_merge.f90
+++ b/src/mode_merge.f90
@@ -188,7 +188,7 @@ module mode_merge
         end do
 
         !If we don't include the wrap command then we have to increase the size of the box
-        if(.not.(wrap_flag)) then 
+        if(.not.(wrap_flag).and..not.(trim(adjustl(dim))=='none')) then 
             do i = 1,3
                 if (alldims(i:i) /= trim(adjustl(dim))) then 
                     if (current_shift(i) < -lim_zero) then