diff --git a/arch/riscv/include/asm/irq.h b/arch/riscv/include/asm/irq.h
index c871661c9df4257dbaede4ee132ee558f303f074..996b6fbe17a61dc3ee149087def49de1108d399c 100644
--- a/arch/riscv/include/asm/irq.h
+++ b/arch/riscv/include/asm/irq.h
@@ -17,10 +17,6 @@
 
 #define NR_IRQS         0
 
-#define INTERRUPT_CAUSE_SOFTWARE    1
-#define INTERRUPT_CAUSE_TIMER       5
-#define INTERRUPT_CAUSE_EXTERNAL    9
-
 void riscv_timer_interrupt(void);
 void riscv_software_interrupt(void);