diff --git a/src/swiftest/swiftest_io.f90 b/src/swiftest/swiftest_io.f90
index 1cf6f93e7..71ba57b7f 100644
--- a/src/swiftest/swiftest_io.f90
+++ b/src/swiftest/swiftest_io.f90
@@ -1882,9 +1882,9 @@ module subroutine swiftest_io_param_reader(self, unit, iotype, v_list, iostat, i
       logical                        :: seed_set = .false.      !! Is the random seed set in the input file?
       character(len=:), allocatable  :: integrator
       real(DP)                       :: tratio, y
+#ifdef COARRAY
       type(swiftest_parameters), codimension[*], save :: coparam
      
-#ifdef COARRAY
    if (this_image() == 1) then
       coparam = self
       associate(param => coparam)