diff --git a/arch/risc-v/src/common/riscv_mtimer.c b/arch/risc-v/src/common/riscv_mtimer.c
index ddd9d8bf744..dd57550bd3d 100644
--- a/arch/risc-v/src/common/riscv_mtimer.c
+++ b/arch/risc-v/src/common/riscv_mtimer.c
@@ -26,7 +26,6 @@
 
 #include <nuttx/arch.h>
 #include <nuttx/irq.h>
-#include <nuttx/kmalloc.h>
 
 #include "riscv_mtimer.h"