diff --git a/src/rp2_common/hardware_irq/irq_handler_chain.S b/src/rp2_common/hardware_irq/irq_handler_chain.S
index fd4141a5b..9ed2d72aa 100644
--- a/src/rp2_common/hardware_irq/irq_handler_chain.S
+++ b/src/rp2_common/hardware_irq/irq_handler_chain.S
@@ -62,6 +62,7 @@ irq_handler_chain_slots:
     .set next_slot_number, next_slot_number + 1
 .endr
 
+.eabi_attribute Tag_ABI_align_preserved, 1
 irq_handler_chain_first_slot:
 #ifndef __riscv
     push {r0, lr}     // Save EXC_RETURN token, so `pop {r0, pc}` will return from interrupt