diff --git a/boards/px4/fmu-v6xrt/nuttx-config/scripts/itcm_static_functions.ld b/boards/px4/fmu-v6xrt/nuttx-config/scripts/itcm_static_functions.ld
index 5d9cd8de73..4968488245 100644
--- a/boards/px4/fmu-v6xrt/nuttx-config/scripts/itcm_static_functions.ld
+++ b/boards/px4/fmu-v6xrt/nuttx-config/scripts/itcm_static_functions.ld
@@ -6,6 +6,7 @@
 *(.text.board_autoled_on)
 *(.text.clock_timer)
 *(.text.exception_common)
+*(.text.flexio_irq_handler)
 *(.text.hrt_absolute_time)
 *(.text.hrt_call_enter)
 *(.text.hrt_tim_isr)