diff --git a/arch/risc-v/src/mpfs/mpfs_timerisr.c b/arch/risc-v/src/mpfs/mpfs_timerisr.c
index 4608d4637de61..40fc13d6b36c1 100644
--- a/arch/risc-v/src/mpfs/mpfs_timerisr.c
+++ b/arch/risc-v/src/mpfs/mpfs_timerisr.c
@@ -33,6 +33,7 @@
 #include <nuttx/spinlock.h>
 
 #include "riscv_internal.h"
+#include "riscv_sbi.h"
 
 #include "mpfs.h"
 #include "mpfs_clockconfig.h"