diff --git a/kernel/irq/irq_sim.c b/kernel/irq/irq_sim.c
index 3d4036db15ac..1a3d483548e2 100644
--- a/kernel/irq/irq_sim.c
+++ b/kernel/irq/irq_sim.c
@@ -13,7 +13,6 @@
 
 struct irq_sim_work_ctx {
 	struct irq_work		work;
-	int			irq_base;
 	unsigned int		irq_count;
 	unsigned long		*pending;
 	struct irq_domain	*domain;