diff --git a/tests/test_midi/src/hwsupport.xc b/tests/test_midi/src/hwsupport.xc
index a8c9c914..02b36a6b 100644
--- a/tests/test_midi/src/hwsupport.xc
+++ b/tests/test_midi/src/hwsupport.xc
@@ -13,13 +13,6 @@ on tile[0]: out port p_ctrl = XS1_PORT_8D;   /* p_ctrl:
                                              * [7]   - MCLK_DIR    (Out:0, In: 1)
                                              */
 
-on tile[0]: in port p_margin = XS1_PORT_1G;  /* CORE_POWER_MARGIN:   Driven 0:   0.925v
-                                              *                      Pull down:  0.922v
-                                              *                      High-z:     0.9v
-                                              *                      Pull-up:    0.854v
-                                              *                      Driven 1:   0.85v
-                                              */
-
 #define USE_FRACTIONAL_N         (0)
 
 #if (USE_FRACTIONAL_N)
@@ -34,9 +27,6 @@ void board_setup()
     /* "Drive high mode" - drive high for 1, non-driving for 0 */
     set_port_drive_high(p_ctrl);
 
-    /* Ensure high-z for 0.9v */
-    p_margin :> void;
-
     /* Drive control port to turn on 3V3 and mclk direction appropriately.
      * Bits set to low will be high-z, pulled down */
     p_ctrl <: EXT_PLL_SEL__MCLK_DIR | 0x20;
diff --git a/tests/xua_unit_tests/src/test_multi_report/test_hid_multi_report.c b/tests/xua_unit_tests/src/test_multi_report/test_hid_multi_report.c
index 4f0bdffd..fbb9a7da 100644
--- a/tests/xua_unit_tests/src/test_multi_report/test_hid_multi_report.c
+++ b/tests/xua_unit_tests/src/test_multi_report/test_hid_multi_report.c
@@ -1,4 +1,4 @@
-// Copyright 2021-2022 XMOS LIMITED.
+// Copyright 2021-2024 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stddef.h>
 #include <stdio.h>
diff --git a/tests/xua_unit_tests/src/test_simple/test_hid.c b/tests/xua_unit_tests/src/test_simple/test_hid.c
index 513b3ea3..28250bd6 100644
--- a/tests/xua_unit_tests/src/test_simple/test_hid.c
+++ b/tests/xua_unit_tests/src/test_simple/test_hid.c
@@ -1,4 +1,4 @@
-// Copyright 2021-2022 XMOS LIMITED.
+// Copyright 2021-2024 XMOS LIMITED.
 // This Software is subject to the terms of the XMOS Public Licence: Version 1.
 #include <stddef.h>
 #include <stdio.h>