diff --git a/Inst_eddies/Tests/test_set_max_speed.f90 b/Inst_eddies/Tests/test_set_max_speed.f90
index 8c1733265aa6cf59e02c7ca165dcc56fc84748a6..3ee4b7f37223df11e1a9a8161956cf7dec644167 100644
--- a/Inst_eddies/Tests/test_set_max_speed.f90
+++ b/Inst_eddies/Tests/test_set_max_speed.f90
@@ -1,7 +1,5 @@
 program test_set_max_speed
 
-  use, intrinsic:: ISO_FORTRAN_ENV
-
   ! Libraries:
   use jumble, only: new_unit, count_lines, get_command_arg_dyn, deg_to_rad