diff --git a/contrib/rtos-helpers/FreeRTOS-openocd.c b/contrib/rtos-helpers/FreeRTOS-openocd.c
index 000453d5d4..5f82ac7a2c 100644
--- a/contrib/rtos-helpers/FreeRTOS-openocd.c
+++ b/contrib/rtos-helpers/FreeRTOS-openocd.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
+// SPDX-License-Identifier: CC0-1.0
 
 /*
  * Since at least FreeRTOS V7.5.3 uxTopUsedPriority is no longer